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Competitive Stats
Q14Section I (Objective (Q1–Q80))14 of 80

Probability — expected absolute value of a discrete variable

A discrete random variable X takes four values −1.5,−1,2.5-1.5,-1,2.5 and 3 with respective probabilities 16,14,12\frac16,\frac14,\frac12 and 112\frac{1}{12}. Then what is E(∣X∣)E(|X|) equal to?

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