11-5: Friedman Rank Test for Differences in C Medians
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چکیده
It sometimes happens that the data collected are only in rank form within each block or normality cannot be assumed in the randomized block design. In these situations, a nonparametric approach called the Friedman rank test can be utilized. The Friedman rank test is primarily used to test whether c sample groups (i.e., the treatment levels) have been selected from populations having equal medians. That is, you test
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