AP Statistics Exam Preparation

Prepare for AP Statistics with 9-unit tests, investigative task FRQ practice, and up to 10 full AP-style mocks. Master inference and data reasoning with GradePerfect.

✦
Want help mastering this topic?
Work 1-on-1 with an IB expert tutor.
Book a session →

About the AP Statistics Exam

AP Statistics introduces students to the major concepts and tools used to collect, analyze, and draw conclusions from data. The exam consists of 40 Multiple Choice questions (MCQ) and 6 Free Response questions (FRQ), with the final FRQ being an extended Investigative Task worth more than the other five combined. This structure places a premium on written statistical reasoning—not just computation.

The Nine Units of AP Statistics

  1. Exploring One-Variable Data — Distributions, summary statistics, and graphical representations
  2. Exploring Two-Variable Data — Scatterplots, correlation, and least-squares regression
  3. Collecting Data — Sampling methods, experimental design, and sources of bias
  4. Probability, Random Variables, and Probability Distributions — Rules of probability, expected value, and discrete/continuous distributions
  5. Sampling Distributions — Central Limit Theorem and the behavior of sample statistics
  6. Inference for Categorical Data: Proportions — Confidence intervals and hypothesis tests for proportions
  7. Inference for Quantitative Data: Means — t-procedures for one- and two-sample means
  8. Inference for Categorical Data: Chi-Square — Goodness-of-fit, homogeneity, and independence tests
  9. Inference for Quantitative Data: Slopes — Inference for linear regression models

The Investigative Task: Why It Matters

The AP Statistics Investigative Task is a multi-part FRQ that requires students to integrate concepts across units, interpret unfamiliar contexts, and write coherent statistical justifications. It is the highest-stakes single question on the exam and rewards students who have built flexible, well-practiced statistical reasoning—not just procedural fluency.

How GradePerfect Prepares You for AP Statistics

Nine Unit Practice Tests

From descriptive statistics through regression inference, each unit has its own practice test so you can master one concept area before advancing to the next.

Sectional Checkpoint Tests

Checkpoints at 30%, 50%, and 70% of the curriculum test your ability to integrate statistical reasoning across multiple units—the exact skill the Investigative Task assesses.

Up to 10 Full AP-Style Mock Exams

Full-length timed mocks replicate the 40 MCQ + 6 FRQ format, including Investigative Task-style extended questions that require written statistical argument construction.

Past Papers

Reviewing released FRQ prompts and scoring guidelines teaches you how to phrase statistical conclusions precisely—a detail that directly affects your score on inference questions.

More in this subject

Unit Wise Tests
Practice AP Statistics with targeted unit-wise tests covering all 9 units. Build FRQ statistical reasoning skills from data exploration through regression inference.
Explore →
Sectional Tests
Assess AP Statistics readiness with 30%, 50%, and 70% sectional tests. Build cumulative statistical reasoning across multiple units before full mock exams.
Explore →
Full Mock Tests
Simulate the AP Statistics exam with full mock tests: 40 MCQ + 6 FRQ including the investigative task. Build timed statistical reasoning and score prediction skills.
Explore →
Past Papers
Use AP-style Statistics past papers to strengthen FRQ writing, recognize recurring question patterns, and improve statistical justification before the AP Statistics exam.
Explore →

Syllabus

Frequently asked questions

AP Statistics covers nine units: exploring one-variable data, exploring two-variable data, collecting data, probability and random variables, sampling distributions, and four inference units covering proportions, means, chi-square tests, and regression slopes. The course emphasizes statistical reasoning, data interpretation, and clear written communication of results rather than advanced computation.
The AP Statistics exam has two sections: 40 multiple-choice questions in 90 minutes and 6 free-response questions in 90 minutes. The FRQ section includes five shorter questions and one longer investigative task. FRQs require you to analyze data, explain your reasoning in context, and justify your statistical conclusions using proper terminology.
AP Statistics has nine units covering exploratory data analysis (one-variable and two-variable), data collection methods, probability and distributions, sampling distributions, and four inference units: proportions, means, chi-square, and regression slopes. The units build from describing data to making formal statistical inferences.
No, AP Statistics does not require calculus. The course uses algebra-level math and focuses on reasoning, interpretation, and communication. The FRQ section in particular tests your ability to explain statistical conclusions clearly in context. Students who are strong at logical reasoning and written communication often do well even without an advanced math background.
The most important FRQ skills are writing clear statistical conclusions in context, justifying your choice of procedure, checking conditions for inference, interpreting confidence intervals and p-values correctly, and communicating results to a non-technical audience. Many students lose FRQ points not from wrong calculations but from incomplete or unclear written explanations.
Ready to start?
Book a free diagnostic.
Get started →