Population Variance
Variance measures the spread around the mean in squared units. Dividing by three treats the three observations as the complete population.
Population Variance
Statistics · 3 inputs
How to use this calculator
- Enter first value in number.
- Enter second value in number.
- Enter third value in number.
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Choose the reference quantity before interpreting the number. A ratio, a percentage and a percentage-point difference may use the same observations while answering different questions. For recorded data, keep the original values beside the summary so an unexpected result can be traced back to its inputs.
Use the sample version when these values are a sample used to estimate a larger population variance.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
Related calculations
Sample Standard Deviation
Sample standard deviation expresses dispersion in the original measurement units.
Open calculator ↗Population Standard Deviation
Population standard deviation describes the spread of a complete three-observation set.
Open calculator ↗Z Score
A z score expresses a distance from the mean in standard deviation units.
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