As the size of the sample in each group increases, all else remaining the same, what will be the impact on the strength of evidence for finding a difference in the average scores on the three exams?
A) There will be more evidence of a difference.
B) There will be less evidence of a difference.
C) There will be no impact on the strength of evidence of a difference.
D) There is not enough information to tell.

Question

Quizplus · Accepted Answer

As the sample size increases, the statistical power of the test increases, which means there is a greater ability to detect a true difference if one exists. This results in stronger evidence for finding a difference in the average scores.

As the Size of the Sample in Each Group Increases