This post will teach you how to carry out the Kruskal-Wallis test in R. The Kruskal-Wallis test is a non-parametric statistical test used to determine whether there is a significant difference in the median values of two or more independent groups. This method is used when the analyzed data is not normally distributed, or the sample size is small. In addition, when the normality assumption is violated, the Kruskal-Wallis test is used instead of the traditional one-way analysis of variance (ANOVA).
