Variance Calculator

Calculate population and sample variance, standard deviation, and other statistics. Enter numbers separated by commas, spaces, or new lines.

Input Method *

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Enter Numbers *

Separate numbers with commas, spaces, or new lines

Decimal Precision

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Variance Results

Population

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Sample

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Data Visualization

Visual representation with mean and spread

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Calculation Breakdown

Step-by-step variance calculation

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Population Variance

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σ² = Σ(x-μ)²/n

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Sample Variance

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s² = Σ(x-x̄)²/(n-1)

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Standard Deviation

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σ or s

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Mean

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μ or x̄

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Count

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➕

Sum

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Σx

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Min / Max

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Range

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Sum of Squares

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Σ(x-x̄)²

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Variance Formulas

Key statistical concepts

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Variance Tips

Understanding variance and spread

📊 Statistical Disclaimer: This variance calculator computes both population and sample variance. Population variance uses n, sample variance uses n-1 (Bessel's correction) for unbiased estimation.