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dse 2010 doubt
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bhawna
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Jun 26, 2014; 2:35pm
dse 2010 doubt
Let X be normally distributed random variable with mean 0 and variance sigma^2. Then the mean of X^2 is
1. 0
2. Sigma
3.2×sigma
4. Sigma^2
SoniaKapoor
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Jun 26, 2014; 2:48pm
Re: dse 2010 doubt
var(x)=E(x^2)-(E(x))^2
sigma^2=E(x^2)-0
=sigma^2
MA Economics
DSE
2014-16
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