Variance Calculator
A clean, responsive tool to compute the variance and standard deviation of a data set.Choose whether your data represents a Sample or the entire Population.Paste or type numbers separated by commas, spaces, or new lines, then press Calculate.
Type/paste multiple values separated by commas, spaces, or line breaks. Scientific notation is supported (e.g., 1.2e3). Blanks are ignored.
Use example
Small sample
Centered data
Choose Sample to use the unbiased estimate (
variance = SS / (n − 1)), or Population for the whole population (variance = SS / n).
Where SS (Sum of Squares) = Σ(xᵢ − mean)². Standard deviation is the square root of variance.