When the samples we want to compare are paired in some natural way,such as pretest/posttest for each person or husband/wife pairs,a more appropriate form of analysis is to not compare two separate variables,but their .
A) difference
B) sum
C) ratio
D) total
E) product

Question

Quizplus · Accepted Answer

When the samples are paired, it is more appropriate to compare the difference between the paired values, as they are likely to be more similar and have less variation than comparing two separate variables. Therefore, the best choice is to compare their differences.

When the Samples We Want to Compare Are Paired in Some