The index of how much a typical score differs from the mean of a group of scores is known as the
A)z-score.
B)range.
C)Pearson r.
D)standard deviation.

Question

Quizplus · Accepted Answer

The index of how much a typical score differs from the mean of a group of scores is represented by the standard deviation. Z-score indicates how many standard deviations a particular score is away from the mean, and range refers to the difference between the highest and lowest scores in a group. Pearson r is a measure of the strength and direction of the linear relationship between two variables. Hence, the best choice in this scenario is D - standard deviation.

The Index of How Much a Typical Score Differs from the Mean