The Wilcoxon test involves either the rank sum test or the signed-rank test and compares two paired groups of data for differences that are statistically significant.

The Kruskal–Wallis test is a statistical test used to compare two or more groups for a continuous or discrete variable. This article explores what the Kruskal–Wallis test is, what it tells us and when ...

P-value is the level of marginal significance within a statistical hypothesis test, representing the probability of the occurrence of a given event.