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Expected Value

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)

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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