Meta.Numerics Library

## SampleCorrectedStandardDeviation Property |

Gets the Bessel-corrected standard deviation.

Syntax

Remarks

This probably isn't the quantity you want, even though it is what many software packages refer to as the "standard deviation". It is the square root of the sum of squared deviations from the mean, divided by n-1 instead of n.

Using n-1 instead of n in the formula for variance produces an
unbiased estimator of the PopulationVariance. But using n-1 instead of n
in the formula for standard deviation, which is how this property is
computed, does *not* produce an unbiased estimator of the population's standard deviation.
Our implementation of PopulationStandardDeviation does a better job of reducing
bias, so you should use it instead if that is what you are trying to estimate. The main
reason this property exists at all is to satisfy users who want to compute the exact
same value that another software package did.

See Also