Population or sample — which do I pick?

Use population when your data is the entire group, and sample when it's a subset used to estimate a larger population (sample divides by n−1).

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Standard Deviation Calculator

Compute standard deviation and variance.

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How to use the Standard Deviation Calculator

1Enter your numbers separated by commas, spaces or new lines.
2Choose population or sample.
3See the standard deviation, variance and mean.

About the Standard Deviation Calculator

Free standard deviation calculator — enter a data set to get the population or sample standard deviation, variance, mean and count, with the steps shown. Fast and accurate.

Part of our Calculators collection. Browse all tools.

Frequently asked questions

Population or sample — which do I pick?: Use population when your data is the entire group, and sample when it's a subset used to estimate a larger population (sample divides by n−1).