Dear All:
I have two r.v. x & y. At the moment, I know the values of x=200, y=1.5% var(x)=1.2; var(y)=0.93
Then z=x*y=200*1.5%=3. Therefore, x & y are not independent.
My question is how to calculate var(z).
If z=x/y, then what var(z) is about?
Many Thanks!
Xin
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