Z score Calculator
Calculates the standardized score of a value given a population mean and standard deviation, displaying the result instantly with clear step-by-step instructions.
The observed value you want to standardize.
The average (expected) value of the population.
The population spread. Must be a positive number.
Formula: z = (x − μ) / σ. A positive z‑score is above the mean, negative is below.
Results
Z‑score
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