If you want to examine the difference between the average scores for students on a pretest/posttest measure, which of the statistical techniques should you select?
A) Regression
B) t test for dependent samples
C) Analysis of variance
D) t test for independent samples

Question

Quizplus · Accepted Answer

A t test for dependent samples is appropriate for examining the difference between the average scores on a pretest/posttest measure because it compares the means of two related samples (the same students completing the pretest and posttest). This test will determine if the difference between the means is statistically significant.

If You Want to Examine the Difference Between the Average