KM 754e-20180322172935 · 2019. 5. 13. · z-score of -2 means that the point is two standard...
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KM 754e-20180322172935 · 2019. 5. 13. · z-score of -2 means that the point is two standard deviations below the mean. Calculate a z-score using this formula: where x is the specific