Random Variables, Random Process, Probability, Deep Dives, Statistics.
E={0, 1, 2, 3, 4}. All probabilities P(W=w_k) in the PMF of W must sum up to 1.0. If they don’t, there is something wrong about how you have defined W. You should give its definition a second look. Now here’s the difference between X and W: Unlike X, the values E={0, 1, 2, 3, 4} in the range of W