If the assumption of homogeneity of variance is violated a nonparametric test has to be used.

Name: If the assumption of homogeneity of variance is violated a nonparametric test has to be used.
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If the assumption of homogeneity of variance is violated, one can use parametric tests with corrections for unequal variances, such as the Welch's t-test or the Brown-Forsythe test. Nonparametric tests are not necessarily required in this case.

If the Assumption of Homogeneity of Variance Is Violated a Nonparametric