Standard Deviation

Paste numbers. Count, mean, sample standard deviation and population standard deviation.

Numbers

Commas, spaces or new lines.

Sample

2.1381

Sample uses n − 1. Population uses n. One number has a population deviation of 0 and no sample deviation.

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Frequently asked questions

Which deviation should I use?

Sample (n − 1) is for a sample from a larger group. Population (n) is for the whole set you listed.

What if I enter one number?

The population deviation is 0. Sample deviation needs at least two numbers, so it is left blank.