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Kruskal-Wallis Test
The Kruskal-Wallis test is a non-parametric statistical test used to determine whether there are statistically significant differences between the median rank differences of three or more independent groups. It is an extension of the Mann-Whitney U test which compares two groups. In a sense, the Kruskal-Wallis test is essentially a one-way ANOVA test for ranks that does not require normality.
The following presentation covers the basics of the Kruskal-Wallis Test and provides an example of its application.
Here are the notes for the presentation above.
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