Suppose John scores 70 on self-esteem scale A, and Bill scores 50 on self-esteem scale B.Assuming that the higher the score, the more self-esteem, which of the following statements is NOT an appropriate conclusion about comparing the two boys' level of self-esteem.
A)John has more self-esteem
B)We don't know based on this information alone because the two scales are different.
C)We should subtract each scale's mean from each raw score and then divide by each scale's standard deviation.
D)If scale A had a mean of 60 and a standard deviation of 20, and if scale B had a mean of 80 and a standard deviation of 10, then Bill has more self-esteem.

Question

Quizplus · Accepted Answer

Without knowing how the scales compare to each other (e.g., their means, standard deviations, or even if they measure the same construct in the same way), we cannot directly compare raw scores from different scales to conclude who has more self-esteem.

Suppose John Scores 70 on Self-Esteem Scale A, and Bill