Standard Deviation Calculator

Standard Deviation Calculator to calculate the standard deviation from a set of numbers. Standard Deviation Formula shows how to calculate standard deviation.

Standard Deviation Formula

Following is the standard deviation formula on how to calculate standard deviation.

Sample Variance =

Standard Deviation = S = √Sample Variance, where

s² = sample variance
s = standard deviation
x1, ..., xN = the sample data set
x̄ = mean value of the sample data set
N = size of the sample data set