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    A Discussion On E(X) and Var(X) of X

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    Let x be a random variable with the following probability distribution:

    Value x of X......P(X = x)
    ........-1...............0.05
    .........0...............0.05
    .........1...............0.60
    .........2...............0.05
    .........3...............0.15
    .........4...............0.10

    Find the expectation E(X) and variance var(X) of X.

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    https://brainmass.com/statistics/probability/a-discussion-on-e-x-and-var-x-of-x-13707

    Solution Summary

    This solution is comprised of calculations to help determine E(X) and Var(X). It is provided in an attached Word document.

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