Kruskal Wallis Test Hypothesis. The kruskal wallis test can be applied in the one factor anova case. Perform the kruskal wallis test.
Non parametric means that the test doesn t assume your data comes from a particular distribution. The median knee pain ratings across the three groups are equal. The kruskal wallis test is the non parametric alternative to the one way anova.
If the distributions are different the kruskal wallis test can reject the null hypothesis even though the medians are the same.
Non parametric means that the test doesn t assume your data comes from a particular distribution. It extends the mann whitney u test which is used for comparing only two groups. The kruskal wallis test by ranks kruskal wallis h test or one way anova on ranks is a non parametric method for testing whether samples originate from the same distribution. We can use the following steps to perform the kruskal wallis test.
