Bessel's correction

Bessel's correction

In statistics, Bessel's correction, named after Friedrich Bessel, is the use of "n" − 1 instead of "n" when estimating variance, where "n" is the number of observations in a sample. "n" − 1 is used to correct for the fact that samples understate the variance in the population on average. See bias of an estimator.

References

* "Use and abuse of statistics" by W.J. Reichmann, 1968 reprint, appendix 8.

External links

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