zMATH
Z-Score Calculator
Calculate a z-score from a value, mean and standard deviation.
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Formula
z = (value − mean) ÷ standard deviation.
z = (value − mean) ÷ standard deviation.
How it works
1
Enter the value.
2
Enter the mean and standard deviation.
3
Review the z-score and interpretation direction.
Important notes
A z-score indicates how many standard deviations a value is above or below the mean.