A z score scale has sometimes been referred to as a "zero plus or minus one" scale because a z score scale
A) has a mean set at 0 and a standard deviation set at 1.
B) has a mean set at 0 and a standard deviation set at -1.
C) has a standard deviation set at 0, and a mean set at 1.
D) None of these

Question

Quizplus · Accepted Answer

A z score is a measure of how many standard deviations an individual data point is from the mean of the dataset. The standard z score scale has a mean of 0 and a standard deviation of 1, making it a "zero plus or minus one" scale.

A Z Score Scale Has Sometimes Been Referred to as a "Zero