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InterviewSolution
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Define Mathematical expectation of a random variable/Mean of random variable. |
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Answer» Let ‘X’ be a discrete random variable which can takes the values x1, x2, x3,… ,xn with respective probabilities p1, p2,p3,… , pn then, the mathematical expectation of ‘ X ’ is:E(X) = x1p1 + x2 P2 + x3 P3 + – + xnPn Then E(X) = Σ x p(x) ;it is also called as mean of discrete random variable (X) |
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