The related-samples design can ______ the power to detect an effect by making the standard error ______.
A) increase; smaller
B) increase; larger
C) decrease; smaller
D) decrease; minimal

Question

Quizplus · Accepted Answer

In a related-samples design, the same participants are measured in both conditions (e.g. before and after an intervention). This reduces the variability between the groups, resulting in a smaller standard error and therefore an increase in power to detect an effect.

The Related-Samples Design Can ______ the Power to Detect an Effect