20. Wilcoxon Signed-Rank Test

This video provides a step-by-step explanation of the Wilcoxon Signed-Rank Test, a non-parametric method for comparing two related samples.

It walks through an example involving two teaching methods and demonstrates how to calculate differences, rank the absolute values, assign signed ranks, and determine whether to reject the null hypothesis.

Perfect for anyone looking to understand the test's logic and practical application, especially when data is not normally distributed.

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