Which of These Tests Is a Nonparametric Method to Compare

question 37

Multiple Choice

Which of these tests is a nonparametric method to compare two or more populations when the samples are independent and the data are either ordinal or interval but not normal?

• A) the Kruskal-Wallis test
• B) the Friedman test
• C) the Wilcoxon rank sum test
• D) the Wilcoxon signed-rank sum test

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