That is false right because you use the f-test for variances and t-test for means...?
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Originally Posted by beetz That is false right because you use the f-test for variances and t-test for means...? You use different tests because the statistics in question have different distributions. It is the difference in distributions which significant. (note in both cases F and t we are assuming normality of the underlying distributions from which the samples are taken). RonL
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