The mean of the standard scores of a variable is always equal to _________ and the standard deviation is always equal to ________.
A) 0; 1
B) 1; 1
C) 1; 0
D) 0; 0

Question

Quizplus · Accepted Answer

The mean of the standard scores (z-scores) in a dataset is always 0, and the standard deviation is always 1. This is by definition of standard scores, which are calculated to standardize an entire distribution by subtracting the mean and dividing by the standard deviation of the original data.

The Mean of the Standard Scores of a Variable Is