Hi. I need some help verifying something.
Let X, Y be discrete random variables such that 1<=X,Y<=10. Then:
Thanks in advance.
another thread on interestingly named math concepts. It is true, and sometimes known as the law of the unconscious statistician.
This isn't your question, but a word of caution on something semi-related: It is not correct to do things like E(|X-Y|) = |E(X)-E(Y)|.