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## Precalculus

### Unit 8: Lesson 9

Expected value- Mean (expected value) of a discrete random variable
- Mean (expected value) of a discrete random variable
- Interpreting expected value
- Interpret expected value
- Expected payoff example: lottery ticket
- Expected payoff example: protection plan
- Find expected payoffs
- Probability and combinatorics: FAQ

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# Mean (expected value) of a discrete random variable

AP.STATS: VAR‑5 (EU), VAR‑5.C (LO), VAR‑5.C.1 (EK), VAR‑5.C.2 (EK), VAR‑5.D (LO), VAR‑5.D.1 (EK) CCSS.Math: HSS.MD.A.2

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