A standard score represents the number of standard deviation units that a score falls above or below the mean.

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A standard score, also known as a z-score, is a unit of measurement used to compare a score to the mean of a distribution. The standard score represents the distance between a score and the mean in terms of standard deviation units. A positive standard score indicates that a score is above the mean, while a negative standard score indicates that a score is below the mean.

A Standard Score Represents the Number of Standard Deviation Units