Standard Deviation Calculator

Analyze a finite list of numbers as a complete population or a sample from a larger population. Calculate it clearly with Figur.

How the standard deviation calculator works

Analyze a finite list of numbers as a complete population or a sample from a larger population.

Method and assumptions

Figur calculates the mean, sum of squared deviations, variance, and its square root. It divides by n for a population or n − 1 for a sample.

  • All values are finite numbers separated by commas, spaces, or line breaks.
  • Population mode represents the complete set; sample mode requires at least two observations.
  • The statistics describe the entered data and do not establish causality or representativeness.

Sources and references

Worked example

Use the population values 2, 4, 4, 4, 5, 5, 7, 9.

The mean is 5, variance is 4, and standard deviation is 2.

Frequently asked questions

When should I choose sample?

Choose sample when your values represent only part of a larger population; it uses n − 1.

Which separators work?

Use commas, spaces, or new lines between finite numeric values.

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