AP Statistics Prep: Units & Free Practice
AP Statistics is a college-level introductory-statistics exam scored 1–5. Here's what its nine units cover and how it's structured — with free COSMIQ practice built around interpreting data and justifying conclusions.
COSMIQ prepares you for the AP Statistics and administers realistic full-length mock tests — it does not administer the official test.
Frequently asked
What does AP Statistics cover?
Nine units in four themes — exploring one- and two-variable data, collecting data, probability and random variables, and inference for proportions, means, chi-square, and slopes — assessed with multiple-choice and free-response questions.
Is AP Statistics practice on COSMIQ free?
Yes. AP practice on COSMIQ is free — voice tutoring, a smart board, and realistic practice questions, with no card required.
Estimate your score with the free AP Statistics score calculator.