When variances across groups are unequal, which of the following is not an appropriate course of action?
A) Welch's F-ratio
B) Games-Howell post hoc tests
C) Transforming the data
D) Friedman's ANOVA

Question

Quizplus · Accepted Answer

Friedman's ANOVA is not appropriate when variances across groups are unequal. Instead, either Welch's F-ratio or transforming the data can be used to account for unequal variances. Post hoc tests such as Games-Howell can also be used to compare group means after an ANOVA, regardless of homogeneity of variance.

When Variances Across Groups Are Unequal, Which of the Following