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standard-deviationClassic tool

Standard Deviation Calculator

Calculate mean, variance and standard deviation from a list of values.

Paste values separated by commas, spaces or line breaks to calculate mean, variance and standard deviation in seconds. The tool is useful for study, exercise checking, quick dispersion analysis and dataset comparison without opening a scientific calculator or spreadsheet.

You can switch between sample and population mode depending on the formula you need.

Count-

Mean-

Variance-

Standard deviation-

Use clear inputs to get a more useful result.