Mean (expected value) of a discrete random variable | AP Statistics | Khan Academy
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Mean (expected value) of a discrete random variable | AP Statistics | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:prob-comb/x9e81a4f98389efdf:expected-value/v/expected-value-of-a-discrete-random-variable Finding the mean (or expected value) of a discrete random variable. View more lessons or ...
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