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

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

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 …

If you're curious about the mathematical ins and outs of probability, you've come to the right unit! Here, we'll take a deep dive into the many ways we can calculate the likelihood of different …

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

If you're curious about the mathematical ins and outs of probability, you've come to the right unit! Here, we'll take a deep dive into the many ways we can calculate the likelihood of different …

Learn high school statistics—scatterplots, two-way tables, normal distributions, binomial probability, and more.

Practice Probability with permutations and combinations Get 3 of 4 questions to level up!

Introduction to random variables and probability distributions AP.STATS: VAR (BI), VAR‑5 (EU), VAR‑5.A (LO), VAR‑5.A.1 (EK), VAR‑5.A.2 (EK), VAR‑5.A.3 (EK), VAR‑5.C (LO), VAR‑5.C.1 …

Writing hypotheses for a significance test about a mean Conditions for a t test about a mean Reference: Conditions for inference on a mean When to use z or t statistics in significance …