Scores on a math aptitude exam for 30 males were compared to those of 30 females.The appropriate design for testing the significance of the difference between the two group means is a
A)between-subjects design.
B)within-subjects design.

Question

Quizplus · Accepted Answer

A between-subjects design is appropriate for testing the significance of the difference between two independent groups, which in this case are males and females. In a between-subjects design, different participants are assigned to each group, and their scores are compared to determine if there is a significant difference between the groups. On the other hand, a within-subjects design involves the same participants being tested in two different conditions, and the scores are compared to determine if there is a significant difference. Therefore, a between-subjects design would be the best choice for this scenario.

Scores on a Math Aptitude Exam for 30 Males Were