Standard Deviation and Variance Calculator
Calculate the standard deviation and variance of a data set, for a population (σ) and for a sample (s), with the deviations table.
One value per line, or values separated by spaces, semicolons or commas followed by a space. Both the decimal point and the decimal comma are accepted.
Entire population (divisor n)
Use when the data contains every value under study: a whole class, every part in a batch.
Sample (divisor n − 1)
Use when the data is an extract from a larger population whose spread you want to estimate.
Deviations from the mean table
| x | x − x̄ | (x − x̄)² |
|---|