Standard Deviation Calculator
Find standard deviation of a data set
Formula
SD = √(Σ(xi - μ)² / N)
Square root of the average of squared deviations from the mean.
Examples
10, 12, 23, 23, 16
SD ≈ 5.36, Mean = 16.8
Frequently Asked Questions
About Standard Deviation
Calculate standard deviation and variance of a data set.