This test is an alternative to the one-way ANOVA for cases where the sample data taken at each input level are not reasonably normal. Also, the Mood's median test may be more appropriate than the Kruskal-Wallis median test when outliers are present.
For example, a health administrator wants to compare the number of unoccupied beds in three hospitals. To determine whether the median number of unoccupied beds differs, the administrator uses the Kruskal-Wallis test. To see an example, go to Minitab Help: Example of Kuskal-Wallis Test.
To add output from a Kruskal-Wallis test, go to Add and complete a form.
Your data must have one categorical factor (X) and one continuous response (Y). Data for all the groups must have similarly shaped distributions. For details, go to Minitab Help: Data considerations for Kruskal-Wallis Test.