Math Calculators

Standard Deviation Calculator

Calculate standard deviation, variance, and mean for a data set. Enter comma-separated values for statistical analysis.

Data (comma separated)

Standard Deviation Calculator Formula

Mean = Σx / n

Variance = Σ(x − mean)² / n

Standard Deviation = √Variance

Data: 2, 4, 4, 4, 5, 5, 7, 9

Mean = 5, Variance = 4, Std Dev = 2

What does standard deviation measure?

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