Variance Calculator
Population and sample variance, with matching standard deviations.
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How to use Variance Calculator
- Enter numbers. Leave a field blank only when the page says the value is missing, not by typing 0 unless 0 is a real value.
- Read the result rows under the form. Errors appear in the status line. Nothing is uploaded.
- Rounding follows IEEE floating point in this browser unless the page says it uses integers or BigInt.
Variance Calculator
Population variance
| Computes | Population and sample variance, with matching standard deviations. |
|---|---|
| Includes | Population variance |
| Includes | Sample variance |
| Engine | stats |
| Upload | None |
| Advice | Arithmetic only |
What Variance Calculator is
Same engine as standard deviation. Variance is in squared units. SD is in the original units.
The formula runs in this tab. CZNull does not receive the numbers.
How this page computes
σ² = Σ(x − μ)² / n. s² uses n − 1. See standard deviation.
Entities and related jobs
Population and sample variance, with matching standard deviations. Named features: Population variance, Sample variance.
See also Standard Deviation Calculator, Average Calculator, Z-Score Calculator, Median and Mode.
Use cases
When a method asks for variance rather than SD, such as ANOVA inputs you are preparing by hand.
Limits
Invalid input appears in the status line. IEEE floating point applies unless a row says otherwise. CZNull does not receive the numbers.