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

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ZarkonBest ResponseYou've already chosen the best response.0
the a gets pulled out and squared
 one year ago

ZarkonBest ResponseYou've already chosen the best response.0
\[V(aX)=(a)^2V(X)=a^2V(X)\]
 one year ago

ZarkonBest ResponseYou've already chosen the best response.0
it 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 \[E(aX+b)=aE(X)+b\]
 one year ago
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