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What is a z-score?

Updated: 5/17/2023

Wiki User

∙ 15y ago

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z score is defined as z = (x-mean)/sd, where mean is the mean of the sample (or population) and sd is the standard deviation of the sample or the population. x is the raw score. z-score standardizes the data. The standardized data will have a zero mean and unit variance. It has numerous applications in statistics.

Wiki User

∙ 15y ago

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Judy Murphy ∙

Lvl 4

∙ 11mo ago

Z-score is a statistical measurement that describes a value's relationship to the mean of a group of values.

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