Learn statistics and probability—everything you'd want to know about descriptive and inferential statistics.

The lifespans of gorillas in a particular zoo are normally distributed. The average gorilla lives 20.8 years; the standard deviation is 3.1 years. Use the empirical rule (68 95 99.7 %) to estimate …

You've experienced probability when you've flipped a coin, rolled some dice, or looked at a weather forecast. Go deeper with your understanding of probability as you learn about …

Practice calculating conditional probability, that is, the probability that one event occurs given that another event has also occurred.

Learn a powerful collection of methods for working with data! AP®️ Statistics is all about collecting, displaying, summarizing, interpreting, and making inferences from data.

Course: AP®︎/College Statistics > Unit 7 Lesson 3: Conditional probability Conditional probability and independence Conditional probability with Bayes' Theorem Conditional probability using …

The probability of getting one condition of an object being a member of set a, or a member of set b is equal to the probability that it is a member of set a, plus the probability that is a member of …

View all of Khan Academy’s lessons and practice exercises on probability and statistics here.

Develop probability distributions: Theoretical probabilities Get 3 of 4 questions to level up!

A conditional distribution tells you the probability of picking a marble with a specific color given that you know its size. For example, you might want to know the probability of picking a red …