If the original raw score distribution is not normally distributed, the mean of the z transformation scores of the raw data will not equal 0.

Question

Quizplus · Accepted Answer

The mean of the z transformation scores of the raw data will always equal 0, regardless of the original distribution's shape, because z-scores are standardized scores that represent the number of standard deviations a data point is from the mean.

If the Original Raw Score Distribution Is Not Normally Distributed