The nonparametric counterpart of a one-way repeated-measures ANOVA is ____.
A)Friedman ANOVA by ranks
B)Kruskal-Wallis test
C)Mann-Whitney ANOVA
D)Wilcoxon ANOVA

Question

Quizplus · Accepted Answer

The nonparametric counterpart of a one-way repeated-measures ANOVA is the Friedman ANOVA by ranks. This test is used when the assumption of sphericity, required for a repeated-measures ANOVA, is not met. It compares ordinal data across multiple treatments or repeated measures. The Kruskal-Wallis test and Mann-Whitney test are nonparametric tests, but they are for independent samples and not repeated measures. The Wilcoxon test is a nonparametric test for related samples, but it is designed for two groups only.

The Nonparametric Counterpart of a One-Way Repeated-Measures ANOVA Is ____