Which describes the z score scale a Mean is 0 scores are exp

Which describes the z score scale?

a. Mean is 0, scores are expressed in terms of number of standard deviations from the mean.

b. Mean is 50, scores are expressed in terms of 10 points per standard deviation from the mean.

c. Mean is 50, scores are expressed in terms of number of standard deviations from the mean.

d. Mean is the average raw score, scores are number of points earned above or below the mean.

Solution

a. Mean is 0, scores are expressed in terms of number of standard deviations from the mean.