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Both calculators run independently — change the inputs on either side to compare results.
Statistics
Standard Deviation Calculator
Instantly find the standard deviation and variance of any numeric data set, choosing between population or sample formulas. Ideal for students, researchers, and analysts summarizing data spread.
Fill in the required fields to see your result.
Statistics
Standard Deviation Calculator
Compute the sample standard deviation directly from three summary statistics — sample size n, the sum of values Σx, and the sum of squared values Σx². This is the spread metric used in virtually every empirical study, quality-control chart, and risk model.
Fill in the required fields to see your result.
Key differences
| Standard Deviation Calculator | Standard Deviation Calculator | |
|---|---|---|
| Category | Statistics | Statistics |
| Inputs required | 3 | 3 |
| Result | Standard Deviation | Standard Deviation |
| What it does | Instantly find the standard deviation and variance of any numeric data set, choosing between population or sample formulas. Ideal for students, researchers, and analysts summarizing data spread. | Compute the sample standard deviation directly from three summary statistics — sample size n, the sum of values Σx, and the sum of squared values Σx². This is the spread metric used in virtually every empirical study, quality-control chart, and risk model. |