📊AP Statistics Review
Free-Response Questions (FRQ)
Free-Response Questions (FRQ)
Unit & Topic Study Guides
Unit 1 – Exploring One–Variable Data and Collecting Data
Unit 2 – Probability, Random Variables, and Probability Distributions
Unit 3 – Inference for Categorical Data: Proportions
Unit 4 – Inference for Quantitative Data: Means
Unit 5 – Regression Analysis
AP Statistics Exam
Statistical Practices
Exam Skills
Overview
The AP Statistics free-response section has four 10-point questions in 90 minutes and counts for 50% of your total exam score. A graphing calculator with statistical capabilities is expected, and formulas and tables are provided.
The four questions appear in this order:
| Question | Focus | Exam Weight |
|---|---|---|
| Question 1 | Multi-Focus on Practices 1 and 2 | 12.5% |
| Question 2 | Multi-Focus on Practices 3 and 4 | 12.5% |
| Question 3 | Inference: hypothesis test or confidence interval | 12.5% |
| Question 4 | Multi-Focus on Practices 2, 3, and 4 | 12.5% |
Each question is scored on an analytic 10-point scale. Clear statistical communication matters as much as the final calculation.
What the FRQs Test
The FRQs ask you to show statistical reasoning in context. A strong response usually includes three moves:
- identify the statistical idea or method,
- show the needed work or evidence,
- interpret the result using the variable, population, and context from the prompt.
Question 1 emphasizes formulating questions and collecting data. Question 2 emphasizes analyzing data and interpreting results. Question 3 focuses on inference, including choosing the procedure, checking conditions, calculating the result, and writing a conclusion. Question 4 combines data collection, analysis, and interpretation across multiple content areas.
Strategy
Answer the prompt, not the topic. If the question asks you to justify a method, do not only name the method. If it asks you to interpret, do not only calculate.
Use context throughout. Statements like "reject the null" are incomplete without the real-world claim. Name the parameter, population, variable, and units when they matter.
Show enough setup. For inference, define the parameter, state hypotheses when testing, check conditions, name the procedure, report the statistic or interval, and conclude in context.
Budget time by points. Four equal-weight questions in 90 minutes gives roughly 20-22 minutes per question plus review time. Do not spend so long polishing one response that you leave another blank.
Common FRQ Habits That Earn Points
- Label parameters clearly.
- State hypotheses with symbols and context.
- Verify conditions with evidence from the prompt.
- Report calculator output with enough detail for the grader to follow your work.
- Interpret intervals, p-values, slopes, residuals, and probabilities in context.
- Use comparative language when asked to compare distributions or groups.
- Explain why a design supports, or does not support, generalization or causation.
Final Thoughts
FRQ success comes from combining accuracy with readable reasoning. Practice writing complete responses, then compare them with scoring guidelines. The goal is not to write more words; it is to make the statistical logic visible.
Frequently Asked Questions
How long is the AP Stats free-response section?
You get 90 minutes for all four free-response questions, and there is no Part A / Part B split anymore. That works out to about 22 minutes per question. All four are worth 10 points and count equally, so budget your time evenly instead of saving extra for a final long question.
How are AP Stats FRQs scored?
Each question is scored out of 10 points on an analytic scale, so every point is earned independently. The E/P/I holistic ratings and the 0-4 conversion retired with the old format. Because points stand alone, an early mistake does not cost you later points as long as your later work is correct or follows consistently from what you found, so it is always worth answering every part.
What do the five AP Stats FRQs cover?
Question 1 focuses on data collection, Question 2 on exploring data, Question 3 on probability and sampling distributions, Question 4 on inference, and Question 5 combines two or more skill categories. The sixth question is the separate Question 4 Multi-Focus FRQ. Knowing this pattern lets you prep each question type.
Do I have to show conditions on AP Stats inference FRQs?
Yes. Just naming a condition like the success/failure check earns nothing on its own. Compute the actual values, such as 50(0.3) = 15, both at least 10, and connect randomness to the wording of the problem. Skipping or only listing conditions is one of the most common ways to drop from an E to a P.
How much of the AP Stats exam are the four FRQs worth?
The five Part A free-response questions count for 50% of your total exam score, with all five weighted equally. The Question 4 Multi-Focus FRQ adds the remaining 12.5% of the section, so the full free-response section is worth 50% of the exam.