TABLE 10-5
To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. The results are given below.
Exam Score Exam Score
Student Before Course (1) After Course (2)
1 530 670
2 690 770
3 910 1,000
4 700 710
5 450 550
6 820 870
7 820 770
8 630 610
-Referring to Table 10-5, in examining the differences between related samples we are essentially sampling from an underlying population of difference "scores."

Question

Quizplus · Accepted Answer

The statement is true. In examining the differences between related samples (i.e. before and after scores), we are essentially studying the distribution of the scores obtained by subtracting the before scores from the after scores. This distribution of difference scores represents the population of interest in this study.

TABLE 10-5 To Test the Effectiveness of a Business School Preparation Course