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Random Variableseasy
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A discrete random variable XXX has PMF P(X=k)=14P(X=k) = \frac{1}{4}P(X=k)=41​ for k=1,2,3,4k = 1, 2, 3, 4k=1,2,3,4. What is Var(X)Var(X)Var(X)?