Mathematics
3 years ago

Welch's V Test Recommended for Behrens-Fisher Problem Power Study.

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Welch's Approximate Solution for the Behrens–Fisher Problem
D. J. Best, J. C. W. Rayner

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The researchers compared different statistical tests for a problem called Behrens-Fisher. They found that the V test, introduced by Welch in 1937, was just as good as other tests but easier to use. So, they recommend using the V test for this problem. They also looked at the size of the V test and compared its power to the usual pooled t test.