Deming's funnel: Difference between revisions
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Mean x, y : 3.1341 5.4210
Std dev x, y : 1.5874 3.9304</pre>
=={{header|Phix}}==
<lang Phix>function funnel(sequence dxs, integer rule)
atom x:=0.0
sequence rxs = {}
for i=1 to length(dxs) do
atom dx = dxs[i]
rxs = append(rxs,x + dx)
switch rule
case 2: x = -dx
case 3: x = -(x+dx)
case 4: x = x+dx
end switch
end for
return rxs
end function
function mean(sequence xs)
return sum(xs)/length(xs)
end function
function stddev(sequence xs)
atom m = mean(xs)
return sqrt(sum(sq_power(sq_sub(xs,m),2))/length(xs))
end function
procedure experiment(integer n, sequence dxs, dys)
sequence rxs = funnel(dxs,n),
rys = funnel(dys,n)
printf(1,"Mean x, y : %7.4f, %7.4f\n",{mean(rxs), mean(rys)})
printf(1,"Std dev x, y : %7.4f, %7.4f\n",{stddev(rxs), stddev(rys)})
end procedure
constant dxs = {-0.533, 0.270, 0.859, -0.043, -0.205, -0.127, -0.071, 0.275,
1.251, -0.231, -0.401, 0.269, 0.491, 0.951, 1.150, 0.001,
-0.382, 0.161, 0.915, 2.080, -2.337, 0.034, -0.126, 0.014,
0.709, 0.129, -1.093, -0.483, -1.193, 0.020, -0.051, 0.047,
-0.095, 0.695, 0.340, -0.182, 0.287, 0.213, -0.423, -0.021,
-0.134, 1.798, 0.021, -1.099, -0.361, 1.636, -1.134, 1.315,
0.201, 0.034, 0.097, -0.170, 0.054, -0.553, -0.024, -0.181,
-0.700, -0.361, -0.789, 0.279, -0.174, -0.009, -0.323, -0.658,
0.348, -0.528, 0.881, 0.021, -0.853, 0.157, 0.648, 1.774,
-1.043, 0.051, 0.021, 0.247, -0.310, 0.171, 0.000, 0.106,
0.024, -0.386, 0.962, 0.765, -0.125, -0.289, 0.521, 0.017,
0.281, -0.749, -0.149, -2.436, -0.909, 0.394, -0.113, -0.598,
0.443, -0.521, -0.799, 0.087}
constant dys = { 0.136, 0.717, 0.459, -0.225, 1.392, 0.385, 0.121, -0.395,
0.490, -0.682, -0.065, 0.242, -0.288, 0.658, 0.459, 0.000,
0.426, 0.205, -0.765, -2.188, -0.742, -0.010, 0.089, 0.208,
0.585, 0.633, -0.444, -0.351, -1.087, 0.199, 0.701, 0.096,
-0.025, -0.868, 1.051, 0.157, 0.216, 0.162, 0.249, -0.007,
0.009, 0.508, -0.790, 0.723, 0.881, -0.508, 0.393, -0.226,
0.710, 0.038, -0.217, 0.831, 0.480, 0.407, 0.447, -0.295,
1.126, 0.380, 0.549, -0.445, -0.046, 0.428, -0.074, 0.217,
-0.822, 0.491, 1.347, -0.141, 1.230, -0.044, 0.079, 0.219,
0.698, 0.275, 0.056, 0.031, 0.421, 0.064, 0.721, 0.104,
-0.729, 0.650, -1.103, 0.154, -1.720, 0.051, -0.385, 0.477,
1.537, -0.901, 0.939, -0.411, 0.341, -0.411, 0.106, 0.224,
-0.947, -1.424, -0.542, -1.032}
for i=1 to 4 do
experiment(i, dxs, dys)
end for</lang>
{{out}}
<pre>
Mean x, y : 0.0004, 0.0702
Std dev x, y : 0.7153, 0.6462
Mean x, y : 0.0009, -0.0103
Std dev x, y : 1.0371, 0.8999
Mean x, y : 0.0439, -0.0063
Std dev x, y : 7.9871, 4.7784
Mean x, y : 3.1341, 5.4210
Std dev x, y : 1.5874, 3.9304
</pre>
=={{header|Python}}==
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