The Friedman test is the nonparametric counterpart of the randomized block experimental design of the analysis of variance.

Friedman Test

This test, which is non-parametric, is employed to spot treatment differences through numerous testing rounds.

Randomized Block Design

An experimental design in which subjects are divided into blocks based on certain characteristics before being randomly assigned to different treatments, reducing the influence of confounding variables.

Analysis Of Variance

A statistical method used to compare the means of three or more samples to determine if at least one of the sample means is significantly different from the others.