# 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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#### 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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