A random variable is distributed over-1,0,1 according to the p.m.f.p() Find its expectation and variance

Question

Question

math Statistics-And-Probability

Answer 1

Answer #1

The expected value is given by, E(x)= 〉 x *p(x) I-1l +1 0l +1 1l +1 And variance is given by, I-11+1 , I01 +1 (-1)25

Answer 2

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