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SDCalc

Sample Variance Calculator: s^2 from Raw Data with Bessel Correction

Calculate sample variance from raw data online. Enter your values, use sample mode, and get s^2 along with mean, standard deviation, standard error, and range in one workflow.

12 values
Instant Math
Sample (n-1) / Population (N)

Use when your data represents a subset of a larger population. Applies Bessel's correction.

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Input your numbers into the Standard Deviation Calculator panel to see real-time statistics, variance, and normal distribution charts.