Mathlean · Online math workspace
Sample standard deviation calculator
Measure sample spread as the square root of sample variance.
How to use this calculator
Edit the data list. The sample standard deviation of 1, 2 and 3 is 1.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
The denominator is n−1. PopulationStandardDeviation uses n; neither describes uncertainty without a sampling model.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.