Statistics

Z-Score

Compute z = (x − μ) / σ, find percentiles, or reverse-solve for x given a z-score. Includes a normal curve with shaded percentile area.

Live Calculator · Step-by-Step · Statistics

Inputs

Value x

Mean μ

Std Dev σ

Z-Score

Mean μ

Std Dev σ

Result

Enter values and calculate.

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Z-Score

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x value

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Percentile

Step-by-Step Work

Your explanation will appear here.

Normal Distribution — Shaded Area

■ Shaded area = percentile | μ (mean) | x value

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