4. Statistics and Probability

Discrete Probability Distributions — Quiz

Test your understanding of discrete probability distributions with 5 practice questions.

Practice Questions

Question 1

What is a discrete probability distribution?

Question 2

Which condition must the probabilities in a discrete probability distribution satisfy?

Question 3

A random variable $X$ has values $0, 1, 2$ with probabilities $0.2, 0.5, 0.3$. What is $P(X=1)?

Question 4

For a discrete random variable $X$, which expression gives the expected value?

Question 5

A discrete random variable takes values $1$ and $3$ with probabilities $0.4$ and $0.6$. What is the expected value $E(X)$?