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OpenStudy (anonymous):
Hi.. Let x,y,z are RVS Y=10+2*x+2.3*x2+11*z+11*z2+12.2*x*z I am having mean and variances of x, x2, z, z2, xz…. How to calculate variance of y…any idea. I wrote a small equation.. ..actually I am having a big equation. Can you give me a general form.. thanks
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