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.

$\Large {Var}(X) = {E}[(X - \mu)^2]$
bag
mbi_public
created
Tue, 01 Feb 2011 22:06:21 GMT
creator
dirkjan
modified
Tue, 01 Feb 2011 22:06:21 GMT
modifier
dirkjan
creator
dirkjan