Difference between revisions of "Variance"
Jump to navigation
Jump to search
(Replaced content with "Variance Category:math") Tag: Replaced |
|||
| (One intermediate revision by the same user not shown) | |||
| Line 1: | Line 1: | ||
| − | + | In probability theory and statistics, the ''variance'' is used as a measure of how far a set of numbers are spread out from each other. It is one of several descriptors of a probability distribution, describing how far the numbers lie from the mean (expected value). In particular, the variance is one of the moments of a distribution. | |
| − | [[Category: | + | |
| + | <math>{Var}(X) = {E}[(X - \mu)^2]</math> | ||
| + | [[Category:mbi]] | ||
Latest revision as of 20:06, 27 August 2020
In probability theory and statistics, the variance is used as a measure of how far a set of numbers are spread out from each other. It is one of several descriptors of a probability distribution, describing how far the numbers lie from the mean (expected value). In particular, the variance is one of the moments of a distribution.
![{\displaystyle {Var}(X)={E}[(X-\mu )^{2}]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/8868c29e0428eb4a4202a302b9a910cd79d521bb)
