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Z-Score Calculator
Calculate the Z-score for a given raw score, mean, and standard deviation.

Z-Score Formula

The Z-score is calculated using the following formula:

Z = (X - μ) / σ

Where:

  • Z is the Z-score.
  • X is the raw score.
  • μ is the mean of the dataset.
  • σ is the standard deviation of the dataset.

What is a Z-Score?

A Z-score (or standard score) measures how many standard deviations a data point (X) is from the mean (μ) of a dataset. It is commonly used in statistics to standardize data and compare values from different distributions.

How to Use the Z-Score Calculator

  • Enter the raw score (X).
  • Enter the mean (μ) of the dataset.
  • Enter the standard deviation (σ) of the dataset.
  • Click Calculate Z-Score to get the result.