Discrete Probability Distributions and Expected Value

What this note covers

1. What Is a Discrete Random Variable?
2. Constructing and Interpreting a Probability Distribution Table
3. Verifying That Probabilities Sum to 1: Finding Unknown Parameters
4. Expected Value E(X): Definition, Formula, and Interpretation
5. Variance Var(X) and Standard Deviation: Measuring Spread
6. The Geometric Distribution
7. Solving Applied Problems: A Comprehensive Queensland Example

7 sections · 12 key terms & formulas · 6 common mistakes