Variance Calculator
Calculate population and sample variance for any data set.
Variance
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Std Deviation
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Variance Formulas
Population Variance (σ²)
σ² = Σ(xᵢ − μ)² / N
Sample Variance (s²)
s² = Σ(xᵢ − x̄)² / (n−1)
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Last updated: 2026-08-08