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SDCalc

Mean and Variance Calculator: Average, Sample Variance, Population Variance, and Standard Deviation

Calculate mean and variance from raw data online. Enter your values to get the average, sample variance, population variance, 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.

No Data Detected

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