Kruskal Wallis Test Hypothesis. It is a nonparametric test. Is there a difference between groups 1 2 and 3 using alpha 0 05.
The null hypothesis of the kruskal wallis test is often said to be that the medians of the groups are equal but this is only true if you assume that the shape of the distribution in each group is the same. Ordinal data is displayed in the table below. Is there a difference between groups 1 2 and 3 using alpha 0 05.
The h test is used when the assumptions for anova aren t met like the assumption of normality.
The median knee pain ratings across the three groups are equal. We can use the following steps to perform the kruskal wallis test. The h test is used when the assumptions for anova aren t met like the assumption of normality. It is sometimes referred to as one way anova on ranks.
