# 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)

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)

$2.49