prove that
Last edited by Jhevon; Mar 7th 2009 at 02:11 PM.
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Originally Posted by takeyourmark prove that
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prove that![E\left( {\left[ {X - E(X)} \right]^2 } \right) = E\left( {X^2 - 2XE\left( X \right) + E^2 \left( X \right)} \right)](http://latex.codecogs.com/png.latex?E\left( {\left[ {X - E(X)} \right]^2 } \right) = E\left( {X^2 - 2XE\left( X \right) + E^2 \left( X \right)} \right))
 - 2E\left( X \right)E\left( X \right) + E^2 \left( X \right) = E\left( {X^2 } \right) - E^2 \left( X \right))
