4. Statistics and Probability
Expected Values — Quiz
Test your understanding of expected values with 5 practice questions.
Practice Questions
Question 1
What is the expected value of a discrete random variable?
Question 2
A fair six-sided die is rolled once. What is the expected value of the score?
Question 3
A game gives a player $10$ dollars with probability $0.2$ and $0$ dollars with probability $0.8$. What is the expected value of the winnings?
Question 4
Which statement best describes a fair game?
Question 5
A random variable takes the values $1$, $2$, and $3$ with probabilities $0.2$, $0.5$, and $0.3$ respectively. What is the expected value?