Compared to the two-independent-sample t test,the related-samples design decreases
A) power.
B) effect size.
C) standard error.
D) significance.

Question

Quizplus · Accepted Answer

The related-samples design (also known as the paired samples design) compares two groups that are related, meaning that they share some common characteristic or have been paired together in some way (e.g. same participants measured at two different time points). Because the samples are related, the standard error is typically smaller than in the two-independent-sample t test, which compares two groups that are independent of each other. Therefore, the related-samples design decreases the standard error. However, the related-samples design does not necessarily decrease power, effect size, or significance, so choices A, B, and D are incorrect.

Compared to the Two-Independent-Sample T Test,the Related-Samples Design Decreases