Calculate the standard deviation and variance of a data set to measure spread.
Calculate the standard deviation and variance of a data set to measure spread.
σ = √[Σ(x – μ)² / (n – 1)]
2, 4, 4, 4, 5, 5, 7, 9 → SD ≈ 2.0.
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What is Standard Deviation Calculator?
Calculate the standard deviation and variance of a data set to measure spread.
What formula does this use?
This calculator uses: σ = √[Σ(x – μ)² / (n – 1)]
Is this calculator free?
Yes! All calculators on CalcNest AI are 100% free with no account required.
Is my data safe?
Absolutely. All calculations run locally in your browser. We never store or transmit your input data.