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Why Does T-Test Assume Equal Variance? [Solved]

Very simple answer: if you assume that two groups are coming from the sample population, you need the proper sampling distribution for this case. So you construct a null hypothesis with “equal variances”. There is only one population, so there is only one variance. Both samples are used to estimate this one variance.16 May 2017

Two Sample t-Test:Equal vs Unequal Variance Assumption| Statistics Tutorial #24| MarinStatsLectures

In this statistics tutorial, we learn about the assumption of

t-Test: Two-Sample Assuming Equal Variances

Bartlett’s test

How to run a t test two sample assuming equal variances in Excel 2013

Visit http://www.statisticshowto.com/how-to-do-a-t-test-in-excel-2013/ for more information on