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3 matching formulas
Statistics & Probability
Population Variance
σ² = Σ(x−μ)²/N
Average squared deviation from the population mean.
Open formula →Statistics & ProbabilitySample Variance
s² = Σ(x−x̄)²/(n−1)
Unbiased estimator of population variance.
Open formula →Statistics & ProbabilityStandard Deviation
σ = √σ²
Square root of variance.
Open formula →