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Suppose your statistics professor reports test grades as z-scores, and you got a score of 2.20 on
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Suppose your statistics professor reports test grades as z-scores, and you got a score of 2.20 on

User NdamuleloNemakh
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This means that you got 2.2 standard deviations above the mean... This is certainly good, but the measure of exactly how good it is depends on the mean, and 1 standard deviation.
User Pescolino
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