Mean and Standard Deviation Calculator (Population vs Sample)

Results will appear here after you enter values.

FAQ

What is the difference between population and sample standard deviation?

Population standard deviation divides variance by N. Sample standard deviation uses N-1 to provide an unbiased estimate of population variability.

How should I format my data?

You can separate values with commas, spaces, or line breaks. Invalid entries trigger an error so you can fix them quickly.

How precise are the results?

The calculator shows up to six decimal places. Copy the results if you need additional formatting.