# Sample and Population Standard Deviation Calculator

Standard deviation is used for measuring the amount of dispersion from its mean for the given set of data. The calculation depends on the type of data we've got, that is for sample or population.

## Population Standard Deviation

The population standard deviation is used for measuring the dispersion of the data in population. It is denoted by σ.

**The formula to calculate population standard deviation is:**## Sample Standard Deviation

Sample Standard Deviation is used as an estimate upon population standard deviation. It is denoted by s.

**The formula to calculate sample standard deviation is given by:**Below online standard deviation calculator can be used for calculating both sample and population standard deviation. The calculator also calculates mean(average) and sample variance. Enter the given data in the input box and then click calculate button to find the output.

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