(New page: For Bernoulli RVs, <math> E[X] = p \!</math> <math> Var(X) = p(1-p)\!</math>) |
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For Bernoulli RVs, | For Bernoulli RVs, | ||
| − | <math> E[X] = p \!</math> | + | <math> E[X^2] = E[X] = p \!</math> |
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| + | After maximizing the variance equation, we get the result as: | ||
<math> Var(X) = p(1-p)\!</math> | <math> Var(X) = p(1-p)\!</math> | ||
Latest revision as of 18:56, 3 November 2008
For Bernoulli RVs,
$ E[X^2] = E[X] = p \! $
After maximizing the variance equation, we get the result as:
$ Var(X) = p(1-p)\! $
