Z-Score Calculator
Z-Score Calculator
How It Works
Input a data point, the mean, and the standard deviation using the keypad or keyboard. The calculator will compute the z-score, indicating how many standard deviations the data point is from the mean. Click “Calculate” to see the result. Share or embed the calculator using the provided buttons.
Z-Score Calculator
Data Point
Mean
Standard Deviation
Result
Steps
About Z-Score Calculator
The Z-Score Calculator determines how many standard deviations a data point is from the mean of a dataset, useful for standardizing data in statistics.
How to Use
- Enter the data point value.
- Enter the mean of the dataset.
- Enter the standard deviation (must be positive).
- Click “Calculate” to compute the z-score. The page will scroll to the result.
- Click “Clear” to reset the inputs and results.
- Click “Share” to copy the calculator’s URL to your clipboard.
- Click “Embed” to copy an iframe code for embedding on another website.
- The result and calculation steps will be displayed.
Formula
z = (x – μ) / σ
Where:
- z = z-score
- x = data point
- μ = mean of the dataset
- σ = standard deviation
Important Notes
- All inputs must be provided and valid numbers.
- Standard deviation must be positive (greater than 0).
- The keypad’s Clear button clears the active input field.
- “Share” and “Embed” buttons require a browser that supports the Clipboard API.