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anonymous
 4 years ago
\[V(x)=E(x^{2})\mu^{2}\] then wat is V(ax) in simplified form as i given for before.
anonymous
 4 years ago
\[V(x)=E(x^{2})\mu^{2}\] then wat is V(ax) in simplified form as i given for before.

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Zarkon
 4 years ago
Best ResponseYou've already chosen the best response.0the a gets pulled out and squared

Zarkon
 4 years ago
Best ResponseYou've already chosen the best response.0\[V(aX)=(a)^2V(X)=a^2V(X)\]

Zarkon
 4 years ago
Best ResponseYou've already chosen the best response.0it is easyier to see if write is as \[V(X)=E(X^2)(E(X))^2\] and use the fact that the expected value is a linear opperator \[E(aX+b)=aE(X)+b\]
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