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    Expected Value

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    Given a random variable X with the following PDF:
    X -3 -2 -1 0 1 2 3
    pi 1/8 1/8 1/8 1/4 1/8 1/8 1/8
    Find expected value E(X) and variance D(X)

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    https://brainmass.com/statistics/central-tendency/expected-value-functions-14133

    Solution Summary

    Given a random variable X with the following PDF:
    X -3 -2 -1 0 1 2 3
    pi 1/8 1/8 1/8 1/4 1/8 1/8 1/8
    Find expected value E(X) and variance D(X)

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