Welch's t-test: Difference between revisions
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<!--<lang Phix>
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">mean</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">a</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #7060A8;">sum</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">/</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">sv</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">a</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">la</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">m</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">mean</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">tot</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">0</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">la</span> <span style="color: #008080;">do</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">d</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">a</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">m</span>
<span style="color: #000000;">tot</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">d</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">d</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">tot</span> <span style="color: #0000FF;">/</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">la</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">welch</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">a</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">la</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">lb</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">mean</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">mean</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">))</span> <span style="color: #0000FF;">/</span> <span style="color: #7060A8;">sqrt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">sv</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">la</span><span style="color: #0000FF;">+</span><span style="color: #000000;">sv</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">dof</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">a</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">la</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">lb</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">sva</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">sv</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">svb</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">sv</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">n</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">sva</span><span style="color: #0000FF;">/</span><span style="color: #000000;">la</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">svb</span><span style="color: #0000FF;">/</span><span style="color: #000000;">lb</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">n</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">n</span> <span style="color: #0000FF;">/</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">sva</span><span style="color: #0000FF;">*</span><span style="color: #000000;">sva</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">la</span><span style="color: #0000FF;">*</span><span style="color: #000000;">la</span><span style="color: #0000FF;">*(</span><span style="color: #000000;">la</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">))</span> <span style="color: #0000FF;">+</span>
<span style="color: #000000;">svb</span><span style="color: #0000FF;">*</span><span style="color: #000000;">svb</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">*</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">*(</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)))</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">f</span><span style="color: #0000FF;">(</span><span style="color: #004080;">atom</span> <span style="color: #000000;">r</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #000000;">r</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">/</span> <span style="color: #7060A8;">sqrt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">-</span><span style="color: #000000;">r</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">simpson0</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">atom</span> <span style="color: #000000;">high</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">tot</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">dx0</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">high</span> <span style="color: #0000FF;">/</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">x0</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">dx0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">x1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">xmid</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">dx</span>
<span style="color: #000000;">tot</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">f</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">v</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">dx0</span>
<span style="color: #000000;">tot</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">f</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dx0</span><span style="color: #0000FF;">*.</span><span style="color: #000000;">5</span><span style="color: #0000FF;">,</span><span style="color: #000000;">v</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">dx0</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">4</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">x1</span> <span style="color: #0000FF;">:=</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">i</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">high</span> <span style="color: #0000FF;">/</span> <span style="color: #000000;">n</span>
<span style="color: #000000;">xmid</span> <span style="color: #0000FF;">:=</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">x0</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">x1</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #0000FF;">.</span><span style="color: #000000;">5</span>
<span style="color: #000000;">dx</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">x1</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">x0</span>
<span style="color: #000000;">tot</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">f</span><span style="color: #0000FF;">(</span><span style="color: #000000;">x0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">v</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">dx</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">2</span>
<span style="color: #000000;">tot</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">f</span><span style="color: #0000FF;">(</span><span style="color: #000000;">xmid</span><span style="color: #0000FF;">,</span><span style="color: #000000;">v</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">dx</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">4</span>
<span style="color: #000000;">x0</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">x1</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">return</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">tot</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">f</span><span style="color: #0000FF;">(</span><span style="color: #000000;">high</span><span style="color: #0000FF;">,</span><span style="color: #000000;">v</span><span style="color: #0000FF;">)*</span><span style="color: #000000;">dx0</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">/</span> <span style="color: #000000;">6</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">constant</span> <span style="color: #000000;">p</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span>
<span style="color: #000000;">0.99999999999980993</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">676.5203681218851</span><span style="color: #0000FF;">,</span>
<span style="color: #0000FF;">-</span><span style="color: #000000;">1259.1392167224028</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">771.32342877765313</span><span style="color: #0000FF;">,</span>
<span style="color: #0000FF;">-</span><span style="color: #000000;">176.61502916214059</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">12.507343278686905</span><span style="color: #0000FF;">,</span>
<span style="color: #0000FF;">-</span><span style="color: #000000;">0.13857109526572012</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">9.9843695780195716e-6</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">1.5056327351493116e-7</span>
<span style="color: #0000FF;">}</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">gamma</span><span style="color: #0000FF;">(</span><span style="color: #004080;">atom</span> <span style="color: #000000;">d</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">dd</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">d</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">g</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">7</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">dd</span><span style="color: #0000FF;"><</span><span style="color: #000000;">0.5</span> <span style="color: #008080;">then</span>
<span style="color: #008080;">return</span> <span style="color: #004600;">PI</span> <span style="color: #0000FF;">/</span> <span style="color: #0000FF;">(</span><span style="color: #7060A8;">sin</span><span style="color: #0000FF;">(</span><span style="color: #004600;">PI</span><span style="color: #0000FF;">*</span><span style="color: #000000;">dd</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">gamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">-</span><span style="color: #000000;">dd</span><span style="color: #0000FF;">))</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #000000;">dd</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">1</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">a</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">p</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">],</span>
<span style="color: #000000;">t</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">dd</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">g</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">0.5</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">p</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span> <span style="color: #000000;">a</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">p</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">/</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">dd</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">i</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">return</span> <span style="color: #7060A8;">sqrt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">2</span><span style="color: #0000FF;">*</span><span style="color: #004600;">PI</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">dd</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">0.5</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #7060A8;">exp</span><span style="color: #0000FF;">(-</span><span style="color: #000000;">t</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">a</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">lGamma</span><span style="color: #0000FF;">(</span><span style="color: #004080;">atom</span> <span style="color: #000000;">d</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #7060A8;">log</span><span style="color: #0000FF;">(</span><span style="color: #000000;">gamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">d</span><span style="color: #0000FF;">))</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">pValue</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">ab</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">sequence</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">a</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">b</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">ab</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">v</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">dof</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">b</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">t</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">welch</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">b</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">g1</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">lGamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">v</span> <span style="color: #0000FF;">/</span> <span style="color: #000000;">2</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">g2</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">lGamma</span><span style="color: #0000FF;">(.</span><span style="color: #000000;">5</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">g3</span> <span style="color: #0000FF;">:=</span> <span style="color: #000000;">lGamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">v</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span> <span style="color: #0000FF;">+</span> <span style="color: #0000FF;">.</span><span style="color: #000000;">5</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">simpson0</span><span style="color: #0000FF;">(</span><span style="color: #000000;">2000</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">*</span><span style="color: #000000;">t</span><span style="color: #0000FF;">+</span><span style="color: #000000;">v</span><span style="color: #0000FF;">),</span> <span style="color: #000000;">v</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">/</span> <span style="color: #7060A8;">exp</span><span style="color: #0000FF;">(</span><span style="color: #000000;">g1</span><span style="color: #0000FF;">+</span><span style="color: #000000;">g2</span><span style="color: #0000FF;">-</span><span style="color: #000000;">g3</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">constant</span> <span style="color: #000000;">tests</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{{{</span><span style="color: #000000;">27.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">16.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.4</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">27.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">25.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.4</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">17.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">14.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.8</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.8</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">19.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.0</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">28.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">26.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">25.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">27.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">13.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">13.2</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">30.02</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.99</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">30.11</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.97</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">30.01</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.99</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">29.89</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.93</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.72</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.98</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">30.02</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.98</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">3.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">4.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">2.1</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">490.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">340.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">433.9</span><span style="color: #0000FF;">}}</span>
<span style="color: #0000FF;">}</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
<span style="color: #0000FF;">?</span><span style="color: #000000;">pValue</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">])</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<!--</lang>-->
{{out}}
<pre>
0.0213780015
0.1488416966
0.035972271
0.0907733243
0.0107506737
</pre>
{{trans|Python}}
The above was a bit off on the fifth test, so I also tried this.<br>
using gamma() from [[Gamma_function#Phix]] (the one from above is probably also fine, but I didn't test that)
<!--<lang Phix>
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #000080;font-style:italic;">--<copy of gamma from Gamma_function#Phix></span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">c</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">12</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">gamma</span><span style="color: #0000FF;">(</span><span style="color: #004080;">atom</span> <span style="color: #000000;">z</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">accm</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">accm</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
<span style="color: #000000;">accm</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sqrt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">2</span><span style="color: #0000FF;">*</span><span style="color: #004600;">PI</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">c</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">accm</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">k1_factrl</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span> <span style="color: #000080;font-style:italic;">-- (k - 1)!*(-1)^k with 0!==1</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">k</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span> <span style="color: #008080;">to</span> <span style="color: #000000;">12</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">c</span><span style="color: #0000FF;">[</span><span style="color: #000000;">k</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">exp</span><span style="color: #0000FF;">(</span><span style="color: #000000;">13</span><span style="color: #0000FF;">-</span><span style="color: #000000;">k</span><span style="color: #0000FF;">)*</span><span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #000000;">13</span><span style="color: #0000FF;">-</span><span style="color: #000000;">k</span><span style="color: #0000FF;">,</span><span style="color: #000000;">k</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1.5</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">k1_factrl</span>
<span style="color: #000000;">k1_factrl</span> <span style="color: #0000FF;">*=</span> <span style="color: #0000FF;">-(</span><span style="color: #000000;">k</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">k</span><span style="color: #0000FF;">=</span><span style="color: #000000;">2</span> <span style="color: #008080;">to</span> <span style="color: #000000;">12</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">accm</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">[</span><span style="color: #000000;">k</span><span style="color: #0000FF;">]/(</span><span style="color: #000000;">z</span><span style="color: #0000FF;">+</span><span style="color: #000000;">k</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #000000;">accm</span> <span style="color: #0000FF;">*=</span> <span style="color: #7060A8;">exp</span><span style="color: #0000FF;">(-(</span><span style="color: #000000;">z</span><span style="color: #0000FF;">+</span><span style="color: #000000;">12</span><span style="color: #0000FF;">))*</span><span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #000000;">z</span><span style="color: #0000FF;">+</span><span style="color: #000000;">12</span><span style="color: #0000FF;">,</span><span style="color: #000000;">z</span><span style="color: #0000FF;">+</span><span style="color: #000000;">0.5</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- Gamma(z+1)</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">accm</span><span style="color: #0000FF;">/</span><span style="color: #000000;">z</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #000080;font-style:italic;">--</copy of gamma></span>
<span style="color: #008080;">function</span> <span style="color: #000000;">lgamma</span><span style="color: #0000FF;">(</span><span style="color: #004080;">atom</span> <span style="color: #000000;">d</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #7060A8;">log</span><span style="color: #0000FF;">(</span><span style="color: #000000;">gamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">d</span><span style="color: #0000FF;">))</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">betain</span><span style="color: #0000FF;">(</span><span style="color: #004080;">atom</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">p</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">q</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">p</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">0</span> <span style="color: #008080;">or</span> <span style="color: #000000;">q</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">0</span> <span style="color: #008080;">or</span> <span style="color: #000000;">x</span><span style="color: #0000FF;"><</span><span style="color: #000000;">0</span> <span style="color: #008080;">or</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">></span><span style="color: #000000;">1</span> <span style="color: #008080;">then</span> <span style="color: #0000FF;">?</span><span style="color: #000000;">9</span><span style="color: #0000FF;">/</span><span style="color: #000000;">0</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">x</span> <span style="color: #0000FF;">==</span> <span style="color: #000000;">0</span> <span style="color: #008080;">or</span> <span style="color: #000000;">x</span> <span style="color: #0000FF;">==</span> <span style="color: #000000;">1</span> <span style="color: #008080;">then</span> <span style="color: #008080;">return</span> <span style="color: #000000;">x</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">acu</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1e-15</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">lnbeta</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">lgamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">p</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">lgamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">q</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">lgamma</span><span style="color: #0000FF;">(</span><span style="color: #000000;">p</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">q</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">psq</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">p</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">q</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">-</span><span style="color: #000000;">x</span>
<span style="color: #004080;">bool</span> <span style="color: #000000;">indx</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">p</span><span style="color: #0000FF;"><</span><span style="color: #000000;">psq</span><span style="color: #0000FF;">*</span><span style="color: #000000;">x</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">indx</span> <span style="color: #008080;">then</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">cx</span><span style="color: #0000FF;">,</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">p</span><span style="color: #0000FF;">,</span><span style="color: #000000;">q</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">-</span><span style="color: #000000;">x</span><span style="color: #0000FF;">,</span><span style="color: #000000;">q</span><span style="color: #0000FF;">,</span><span style="color: #000000;">p</span><span style="color: #0000FF;">}</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">term</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">ai</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">val</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">ns</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">q</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">cx</span><span style="color: #0000FF;">*</span><span style="color: #000000;">psq</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">rx</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">ns</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">?</span><span style="color: #000000;">x</span><span style="color: #0000FF;">:</span><span style="color: #000000;">x</span><span style="color: #0000FF;">/</span><span style="color: #000000;">cx</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">temp</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">q</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">ai</span>
<span style="color: #008080;">while</span> <span style="color: #004600;">true</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">term</span> <span style="color: #0000FF;">*=</span> <span style="color: #000000;">temp</span> <span style="color: #0000FF;">*</span> <span style="color: #000000;">rx</span> <span style="color: #0000FF;">/</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">p</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">ai</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">val</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">term</span>
<span style="color: #000000;">temp</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">term</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">temp</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">acu</span> <span style="color: #008080;">and</span> <span style="color: #000000;">temp</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">acu</span><span style="color: #0000FF;">*</span><span style="color: #000000;">val</span> <span style="color: #008080;">then</span>
<span style="color: #000000;">val</span> <span style="color: #0000FF;">*=</span> <span style="color: #7060A8;">exp</span><span style="color: #0000FF;">(</span><span style="color: #000000;">p</span><span style="color: #0000FF;">*</span><span style="color: #7060A8;">log</span><span style="color: #0000FF;">(</span><span style="color: #000000;">x</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">+</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">q</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)*</span><span style="color: #7060A8;">log</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cx</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">lnbeta</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">/</span> <span style="color: #000000;">p</span>
<span style="color: #008080;">return</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">indx</span><span style="color: #0000FF;">?</span><span style="color: #000000;">1</span><span style="color: #0000FF;">-</span><span style="color: #000000;">val</span><span style="color: #0000FF;">:</span><span style="color: #000000;">val</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #000000;">ai</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">1</span>
<span style="color: #000000;">ns</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">1</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">ns</span><span style="color: #0000FF;">>=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
<span style="color: #000000;">temp</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">q</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">ai</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">ns</span> <span style="color: #0000FF;">==</span> <span style="color: #000000;">0</span> <span style="color: #008080;">then</span>
<span style="color: #000000;">rx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">x</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">else</span>
<span style="color: #000000;">temp</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">psq</span>
<span style="color: #000000;">psq</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">1</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">welch_ttest</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">ab</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">sequence</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">a</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">b</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">ab</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">la</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">lb</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">ma</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sum</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">la</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">mb</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sum</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">va</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sum</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">sq_power</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">sq_sub</span><span style="color: #0000FF;">(</span><span style="color: #000000;">a</span><span style="color: #0000FF;">,</span><span style="color: #000000;">ma</span><span style="color: #0000FF;">),</span><span style="color: #000000;">2</span><span style="color: #0000FF;">))/(</span><span style="color: #000000;">la</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">vb</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">sum</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">sq_power</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">sq_sub</span><span style="color: #0000FF;">(</span><span style="color: #000000;">b</span><span style="color: #0000FF;">,</span><span style="color: #000000;">mb</span><span style="color: #0000FF;">),</span><span style="color: #000000;">2</span><span style="color: #0000FF;">))/(</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">n</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">va</span><span style="color: #0000FF;">/</span><span style="color: #000000;">la</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">vb</span><span style="color: #0000FF;">/</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">t</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">ma</span><span style="color: #0000FF;">-</span><span style="color: #000000;">mb</span><span style="color: #0000FF;">)/</span><span style="color: #7060A8;">sqrt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">df</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">*</span><span style="color: #000000;">n</span><span style="color: #0000FF;">)</span> <span style="color: #0000FF;">/</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">va</span><span style="color: #0000FF;">*</span><span style="color: #000000;">va</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">la</span><span style="color: #0000FF;">*</span><span style="color: #000000;">la</span><span style="color: #0000FF;">*(</span><span style="color: #000000;">la</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">))</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">vb</span><span style="color: #0000FF;">*</span><span style="color: #000000;">vb</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">*</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">*(</span><span style="color: #000000;">lb</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)))</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">betain</span><span style="color: #0000FF;">(</span><span style="color: #000000;">df</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">t</span><span style="color: #0000FF;">*</span><span style="color: #000000;">t</span><span style="color: #0000FF;">+</span><span style="color: #000000;">df</span><span style="color: #0000FF;">),</span> <span style="color: #000000;">df</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">constant</span> <span style="color: #000000;">tests</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{{{</span><span style="color: #000000;">27.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">16.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.4</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">27.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">25.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.4</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">17.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">14.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.8</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.8</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">19.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.8</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">19.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.0</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">28.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">26.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">25.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">22.1</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">27.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">13.7</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">17.5</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">18.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">23.9</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">21.6</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.3</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">20.4</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">24.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">13.2</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">30.02</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.99</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">30.11</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.97</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">30.01</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.99</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">29.89</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.93</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.72</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.98</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">30.02</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">29.98</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">3.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">4.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">1.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">2.1</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">490.2</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">340.0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">433.9</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">0.010268</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0.000167</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0.000167</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">0.159258</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0.136278</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0.122389</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">1.0</span><span style="color: #0000FF;">/</span><span style="color: #000000;">15</span><span style="color: #0000FF;">,</span><span style="color: #000000;">10.0</span><span style="color: #0000FF;">/</span><span style="color: #000000;">62.0</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">1.0</span><span style="color: #0000FF;">/</span><span style="color: #000000;">10</span><span style="color: #0000FF;">,</span><span style="color: #000000;">2</span><span style="color: #0000FF;">/</span><span style="color: #000000;">50.0</span><span style="color: #0000FF;">}},</span>
<span style="color: #0000FF;">{{</span><span style="color: #000000;">9</span><span style="color: #0000FF;">/</span><span style="color: #000000;">23.0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">21</span><span style="color: #0000FF;">/</span><span style="color: #000000;">45.0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">/</span><span style="color: #000000;">38.0</span><span style="color: #0000FF;">},</span>
<span style="color: #0000FF;">{</span><span style="color: #000000;">0</span><span style="color: #0000FF;">/</span><span style="color: #000000;">44.0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">42</span><span style="color: #0000FF;">/</span><span style="color: #000000;">94.0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">/</span><span style="color: #000000;">22.0</span><span style="color: #0000FF;">}}},</span>
<span style="color: #000000;">correct</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">0.021378001462867</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">0.148841696605327</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">0.0359722710297968</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">0.090773324285671</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">0.0107515611497845</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">0.00339907162713746</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">0.52726574965384</span><span style="color: #0000FF;">,</span>
<span style="color: #000000;">0.545266866977794</span><span style="color: #0000FF;">}</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">cerr</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
<span style="color: #004080;">atom</span> <span style="color: #000000;">r</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">welch_ttest</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">])</span>
<span style="color: #0000FF;">?</span><span style="color: #000000;">r</span>
<span style="color: #000000;">cerr</span> <span style="color: #0000FF;">+=</span> <span style="color: #7060A8;">abs</span><span style="color: #0000FF;">(</span><span style="color: #000000;">r</span><span style="color: #0000FF;">-</span><span style="color: #000000;">correct</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">])</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #0000FF;">?{</span><span style="color: #008000;">"cumulative error"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">cerr</span><span style="color: #0000FF;">}</span>
<!--</lang>-->
{{out}}
<pre>
Line 1,567 ⟶ 1,595:
0.5272657497
0.545266867
{"cumulative error",1.989380882e-14} -- (32 bit/p2js)
{"cumulative error",4.915115776e-15} -- (64-bit)
</pre>
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