一道英文概率题 X and Y have a multivariate discrete distribution wi
一道英文概率题
X and Y have a multivariate discrete distribution with the probability function
f(X,Y) where f(-1,1) = f(0,0) = f(1,1) = 1/3.What is the correlation
coefficient between X and Compute the marginal density,fx(1) of X when it
equals 1.Similarly compute fy(1).Does f(1,1) = fx(1)fy(1) Use this example
to outline the relationship between correlation and independence.