"A Distribution-Free Test That Is Used to Compare the Central

Multiple Choice

"A distribution-free test that is used to compare the central tendency of sets of data that are collected in pairs from the same participants.It is particularly applicable to 'before' and 'after' designs in which data are obtained from the same source on two occasions." What construct is this a glossary definition of?

A) Kruskal-Wallis test
B) Wilcoxon matched-pairs signed-ranks test
C) Chi-square test
D) Mann-Whitney test
E) McNemar test.