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Statistics calculator

Z Score

Calculate z score using the z score formula.

Z score: -
Calculation explained

How this result was calculated

The formula, your substituted values, and the evaluated result are shown below.

Reference: Formulae and Tables, State Examinations Commission (2014), page 36.
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How the Z Score works

This calculator applies the formula given in Formulae and Tables, State Examinations Commission (2014), page 36. Enter values in consistent units.

Formula and inputs

(x-mean) ÷ sd

Inputs: Observed value, Population mean, Population standard deviation.

Using the result

The result is rounded to 4 decimal places. Check units, assumptions and significant figures before using the answer.

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