Variance/Definition: Difference between revisions
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imported>Anita Banser (Variance Formula) |
imported>Anita Banser m (Variance update) |
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==Formula== | ==Formula== | ||
If X is a random variable with mean | If X is a random variable with mean μ, the variance of X is denoted by Var(X) | ||
[[Image:Variance.png]] | [[Image:Variance.png]] | ||
Revision as of 03:13, 6 August 2008
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Variance [r]: A statistical measure of the variability of a quantity (defined as the mean of the squares of the deviation of its values from their mean, and expressed mathematically as Var(x)).
Formula
If X is a random variable with mean μ, the variance of X is denoted by Var(X)
