Variance Calculator
Compute population or sample variance of a data set.
Input Data
Data
Results
5
4
4.5714
2
At a glance:Variance = mean of squared deviations; population σ² = Σ(x−μ)²/n, sample s² = Σ(x−x̄)²/(n−1). Complements standard-deviation and MAD.
Formula
population: σ² = Σ(x−μ)² / n.
sample: s² = Σ(x−x̄)² / (n−1).
How to Use
- Enter comma-separated numbers and a mode.
- The tool returns the variance.
Case Studies
2,4,6,8
mean 5; sample s² = 20/3 ≈ 6.67.
FAQ
Population vs sample?
Use sample (÷n−1) for a subset to reduce bias.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.