21. Kruskal-Wallis Test

In this video, we explore the Kruskal-Wallis test, a non-parametric statistical method used to compare the distribution of a continuous variable across three or more independent groups.

We break down the process step-by-step, including how to rank the data, calculate the test statistic, and make a final decision on whether to accept or reject the null hypothesis.

You'll also see a clear example comparing reaction times across three age groups, complete with formulas and explanations.

Whether you're a student or researcher, this guide will help you understand when and how to apply the Kruskal-Wallis test!

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