Suppose That All the Values in a Data Set Are

Multiple Choice

Suppose that all the values in a data set are converted to z-scores. Which of the statements below is true?
A: The mean of the z-scores will be zero, and the standard deviation of the z-scores will be the same as the standard deviation of the original data values.
B: The mean and standard deviation of the z-scores will be the same as the mean and standard deviation of the original data values.
C: The mean of the z-scores will be 0, and the standard deviation of the z-scores will be 1.
D: The mean and the standard deviation of the z-scores will both be zero.

A) D
B) A
C) B
D) C