I have three different probability distributions X, Y, and Z, all with a range of {0, 4} and I was able to find their own probability distributions, expected values, and variances.
I'm confused how to find the joint probability distribution of (X, Y, Z) and the joint pmf s.t. f(x, y, z) = P[X = x, Y = y, Z = z]. As well as getting the covariance of each (Cov(X, Y), Cov(Y, Z) and Cov(X, Z)).
Can someone help me with guidance through this?