Variance Calculator (Sample & Population)
Calculate sample and population variance and standard deviation, with the sum of squared deviations, from your data, free online.
À propos de cette calculatrice
Population variance σ² = Σ(x − μ)² ÷ N; sample variance s² = Σ(x − x̄)² ÷ (N − 1) (Bessel's correction). Use the population formulas when the data are the whole group and the sample formulas when they are a sample drawn from a larger group.