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053概率中等derivationmedium

Zero Correlation Does Not Imply Independence

题目

Let XX be uniformly distributed on {1,0,1}\{-1, 0, 1\}. Define Y=X2Y = X^2. Compute Cov(X,Y)\text{Cov}(X, Y) and determine whether XX and YY are independent.

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你的答案

Cov(X,Y)

Independence