Determining whether there is a logical reason to pair two scores in a two-sample experiment is necessary in deciding whether
A) to use a one-tailed or two-tailed test
B) the design is a paired-samples or an independent-samples design
C) to use hypothesis testing or confidence intervals
D) all of the descriptive alternatives are correct.

Question

Quizplus · Accepted Answer

Determining if there's a logical reason to pair two scores is crucial for deciding between a paired-samples design (where each participant is measured twice under different conditions or matched with a similar participant) and an independent-samples design (where two groups of participants are compared, and the participants in each group are not related or matched). This decision does not directly affect the choice between one-tailed or two-tailed tests, nor the choice between using hypothesis testing or confidence intervals, as those decisions are based on different considerations.

Determining Whether There Is a Logical Reason to Pair Two