alleryStart learning →A z-score reports how far a value sits from the mean, measured in which units?
AOriginal data units
BPercentage points
CSquared distances
DStandard deviations
Answer & Solution
Correct answer: D. Standard deviations
1. A raw distance from the mean is measured in whatever units the data used.
2. A z-score rescales that distance by dividing it by the standard deviation.
3. So a z-score counts standard deviations rather than inches, kilograms or points.
_Source: OpenStax High School Statistics (CC BY 4.0), section 6.1 The Standard Normal Distribution_
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