Which of these tests is the nonparametric counterpart of the parametric t test of for matched pairs?
A) the Friedman test
B) the Kruskal-Wallis test
C) the Wilcoxon signed-rank test
D) the Wilcoxon rank sum test

Question

Which of these tests is the nonparametric counterpart of the parametric t test of  for matched pairs?
A) the Friedman test 
B) the Kruskal-Wallis test 
C) the Wilcoxon signed-rank test 
D) the Wilcoxon rank sum test

Quizplus · Accepted Answer

The Wilcoxon signed-rank test is the nonparametric counterpart of the parametric t test for matched pairs. It is used to test the hypothesis that the median of the differences between paired observations is zero. The Friedman test is used to compare three or more matched samples, the Kruskal-Wallis test is used to compare three or more independent samples, and the Wilcoxon rank sum test is used to compare two independent samples.

Which of These Tests Is the Nonparametric Counterpart of the Parametric