Math

Standard Deviation Calculator

Calculate mean, variance, and standard deviation for a dataset.

Standard Deviation Calculator computes mean, variance, and standard deviation for a dataset. It is useful in descriptive statistics and quality monitoring tasks. The tool provides fast spread measurements without spreadsheet setup. Use it to compare variability across data samples.

Dataset Input

Use commas, spaces, or semicolons between values.

Statistics

Count: 8

Mean: 18.00000

Population variance: 24.00000

Population std dev: 4.89898

Sample variance: 27.42857

Sample std dev: 5.23723

How to use this tool

Enter the dataset values in list format.
Run calculation to get mean, variance, and standard deviation.
Compare standard deviation across groups to assess dispersion.

Statistics and data products

Link to stats textbooks, spreadsheet templates, and analytics learning platforms.

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