4. Statistics and Probability

Discrete Probability Distributions — Quiz

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

Practice Questions

Question 1

Which statement best describes a discrete random variable?

Question 2

What is always true for the probabilities in a discrete probability distribution?

Question 3

Given $P(X=0)=0.2$, $P(X=1)=0.5$, and $P(X=2)=k$, what is the value of $k$?

Question 4

For the distribution with $X=0, 1, 2$ and probabilities $0.1, 0.4, 0.5$, what is the expected value $E(X)?

Question 5

Which list could represent the probabilities for a discrete probability distribution with three outcomes?