Question

Criteria for choosing the Wilcoxon matched pairs test include which of the following?

a. there are 2 paired measurements of the characteristic of interest
b. there are at least 30 pairs in the sample size
c. the measurement scale is ordinal
d. there are at least 5 pairs in the total sample size
e. No answer text provided

Answer 1

Ans :

a) there are two paired measurements of the characteristics of interest .

Because the two samples need to be dependent observations of the cases. The Wilcoxon sign test assess for differences between a before and after measurement, while accounting for individual differences in the baseline.

c)the measurement scale is ordinal

Because The Wilcoxon sign test needs both dependent measurements to be at least of ordinal scale. This is necessary to ensure that the two values can be compared, and for each pair, it can be said if one value is greater, equal, or less than the other.