Welch's t-test: Difference between revisions
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t = (mean(x)-mean(y))/(sqrt(v1/n1+v2/n2)); |
t = (mean(x)-mean(y))/(sqrt(v1/n1+v2/n2)); |
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df = (v1/n1+v2/n2)^2/(v1^2/(n1^2*(n1-1))+v2^2/(n2^2*(n2-1))); |
df = (v1/n1+v2/n2)^2/(v1^2/(n1^2*(n1-1))+v2^2/(n2^2*(n2-1))); |
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[p, q] = cdft("PQ", abs(t), df); |
[p, q] = cdft("PQ", -abs(t), df); |
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[t df 2*p]</lang> |
[t df 2*p]</lang> |
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