Standard Deviation Calculator
Calculate mean, variance, and standard deviation for any data set.
How this is calculated
Sample: s = sqrt(sum(x-mean)^2 / (n-1)). Population: sigma = sqrt(sum(x-mean)^2 / n).
Calculate mean, variance, and standard deviation for any data set.
Sample: s = sqrt(sum(x-mean)^2 / (n-1)). Population: sigma = sqrt(sum(x-mean)^2 / n).