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What zThe closer your Z-score is to zero, the closer your value is to the mean.
What is the zA z-score of 0 is equal to the mean (exactly average).
What is the range of zWhat is a z-scores range? A z-score scores range from -3 std devs (which would fall to the far left of the normal distribution curve) to +3 std devs (which would fall to the far right of the normal distribution curve).
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