Kruskal Wallis Test Equation. Under the null hypothesis the chi square distribution with k 1 degrees of freedom approximates the distribution of h and h adj. Displaystyle n 1 n n 1 12 and.
H frac 12 n n 1 bigg frac sum i 1 k t i 2 n i 3 n 1 bigg. Displaystyle n 1 n n 1 12 and. P value 1 cdf χ 2h df p value 1 cdf χ 2h adj df for small samples minitab recommends that you use exact tables.
The kruskal wallis test does not assume normality in the data and is much less sensitive to outliers than.
The kruskal wallis test is a nonparametric distribution free test and is used when the assumptions of one way anova are not met. If the data contains ties a correction can be used by dividing h by. The kruskal wallis test does not assume normality in the data and is much less sensitive to outliers than. P value 1 cdf χ 2h df p value 1 cdf χ 2h adj df for small samples minitab recommends that you use exact tables.
