Do I need to sign up?

No. The tool works without an account.

Are my data uploaded?

Compatible operations run locally in the browser.

Sample variance divides by n-1 (Bessel's correction). Population variance divides by n. Use sample for data from a larger group.

Comma, space, or newline separated. Non-numeric values are ignored.

Calculate sample or population variance of a list of numbers. Shows mean, variance, and standard deviation.

Variance calculator

2.5000

Sample variance · n=5

Mean: 3.0000 · Std. dev.: 1.5811

Numbers (comma, space or newline separated)Sample variance (divide by n-1)

Calculates the mean, variance (sample or population) and standard deviation.

Examples

1, 2, 3, 4, 5 → mean 3, sample variance 2.5, SD ≈1.581

10, 20, 30 (population) → mean 20, variance 66.67, SD ≈8.165

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Tool guide

Practical information to understand the result and use this tool correctly.

Calculate sample or population variance of a list of numbers. Shows mean, variance, and standard deviation.

The tool runs directly in the browser for immediate results.

Do I need to sign up?: No. The tool works without an account.
Are my data uploaded?: Compatible operations run locally in the browser.
What is the difference between sample and population variance?: Sample variance divides by n-1 (Bessel's correction). Population variance divides by n. Use sample for data from a larger group.
How do I enter the numbers?: Comma, space, or newline separated. Non-numeric values are ignored.