A z score of +3.00, means that
A) the raw score is exactly 3 standard deviation units above the mean
B) the raw score is exactly 3 percentage points above the mean
C) the raw score is exactly 3 raw score units above the mean
D) none of these

Question

Quizplus · Accepted Answer

A z-score represents how many standard deviations a data point is from the mean. So, a z-score of +3.00 means that the data point is 3 standard deviations above the mean. Therefore, option A is the correct choice. Options B and C are incorrect because z-scores are not expressed in percentage points or raw score units, respectively.

A Z Score of +3.00, Means That