Which one of the following nonparametric methods requires that we carry out a paired difference experiment?
A)Wilcoxon signed ranks test
B)Sign test
C)Kruskal-Wallis test
D)Wilcoxon rank sum test

Question

Quizplus · Accepted Answer

The Wilcoxon signed ranks test is a nonparametric statistical test that is used to compare the medians of two related samples. It is a paired difference test, which means that the data must be collected in pairs. The sign test is also a nonparametric statistical test that is used to compare the medians of two related samples. However, it is not a paired difference test. The Kruskal-Wallis test is a nonparametric statistical test that is used to compare the medians of three or more independent samples. The Wilcoxon rank sum test is a nonparametric statistical test that is used to compare the medians of two independent samples.

Which One of the Following Nonparametric Methods Requires That We