Friedman test1

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  Friedman test Information The Friedman test is a non-parametric statistical test that compares three or more related samples to test if their underlying population distributions are different. The Friedman test is used when the data are not normally distributed or the assumptions of the parametric tests, such as the repeated measures ANOVA, are violated. The Friedman test ranks the observations in each sample.. Zettelkasten/Terminology Information 2023. 2. 28.