AP Statistics Scoring GuidelinesHow AP Statistics Is Scored and Curved
Official year by year scoring guidelines, plus how the 40 multiple choice questions and 6 free response questions combine into one composite, how the E/P/I rubric works, and what every score from 1 to 5 means.
AP Statistics scoring guidelines archive (2019 to 2025)
6 of 6 resources
2025
1 file- Open PDF
2025 AP Statistics Scoring Guidelines
Scoring Guidelines
2024
1 file- Open PDF
2024 AP Statistics Scoring Guidelines
Scoring Guidelines
2023
1 file- Open PDF
2023 AP Statistics Scoring Guidelines
Scoring Guidelines
2022
1 file- Open PDF
2022 AP Statistics Scoring Guidelines
Scoring Guidelines
2021
1 file- Open PDF
2021 AP Statistics Scoring Guidelines
Scoring Guidelines
2019 and earlier
1 file- Open PDF
AP Statistics Scoring Guidelines through 2019 (official archive)
Scoring Guidelines · official archive
1 to 5 (3 or higher qualifies for credit)
Score scale
40 multiple choice questions, 50% of composite
Section I weighting
6 free response questions, 50% of composite
Section II weighting
E/P/I (Essentially Correct, Partially Correct, Incorrect)
FRQ rubric system
2.87, with 61.6% scoring 3 or higher
2024 mean score
Standard set annually, not a fixed percentage cutoff
Curve
How is the AP Statistics exam scored?
Two equal sections combine at 50% each, then map to the 1 to 5 AP scale through College Board's annual standard setting process.
AP Statistics has two sections of equal weight. Section I is 40 multiple choice questions scored as a raw count with no penalty for wrong answers. Section II is 6 free response questions scored against the E/P/I rubric, which awards Essentially Correct, Partially Correct, or Incorrect on each component of each question. The two section scores are each scaled and combined into one composite, and College Board converts that composite to a 1 to 5 grade each year through a standard setting process anchored to prior years. Because the mapping is reset annually, there is no permanent percentage cutoff for any AP grade. Both sections carry exactly equal weight: a strong multiple choice performance cannot rescue a weak free response section, and vice versa.
How the AP Statistics composite score is built
Multiple choice and free response each contribute 50%, with the Investigative Task carrying the most weight of any single free response question.
The exact scaling shifts slightly each year, but the structure is stable and worth understanding before you set a practice target. According to College Board's AP Statistics exam documentation, Section I contributes 50% and Section II contributes 50% of the final composite.
Section I: Multiple Choice (50%)
40 questions, 90 minutes. Scored as a raw count with no penalty for wrong answers, so every unanswered question costs you. The raw count is weighted to contribute exactly half of the composite. A graphing calculator is required and permitted throughout.
Section II: Free Response Questions 1 through 5 (part of 50%)
Five standard free response questions, each typically worth 4 points. Each question is divided into parts, and each part is scored using the E/P/I rubric: Essentially Correct earns full credit, Partially Correct earns partial credit, and Incorrect earns no credit. Together, the five standard questions contribute to the Section II 50%.
Section II: Investigative Task, Question 6 (part of 50%)
The Investigative Task is an extended multi part response built around a single data scenario. It carries more total points than any individual standard free response question and tests integration across multiple content areas. A strong performance on Question 6 can meaningfully recover points lost on standard questions, while a weak performance on Question 6 is difficult to compensate for elsewhere in Section II.
Composite and mapping to 1 to 5
The weighted Section I and Section II scores are summed into a single composite. College Board then sets composite boundaries for each AP grade through annual standard setting. As a rough planning heuristic only, recent administrations have placed the 3 boundary near the mid 40s percent of total available composite points and the 5 boundary near the high 60s to low 70s percent. These are approximate and year dependent, not a fixed target.
What does each AP Statistics score mean?
3 or higher is the qualifying threshold. Most colleges grant credit at 3, though selective institutions require a 4 or 5 for Intro Statistics course credit.
| Score | Official label | What it means |
|---|---|---|
| 5 | Extremely well qualified | Performance equivalent to an A or A plus in a college introductory statistics course. Demonstrates comprehensive mastery of inference procedures, probability reasoning, and statistical argumentation in context. Earns credit at virtually every institution that grants AP Statistics credit, often covering a full semester of Intro Statistics. |
| 4 | Well qualified | Performance equivalent to an A minus or B plus in college introductory statistics. Strong on the major inference procedures with minor gaps in the most complex reasoning or Investigative Task integration. Earns credit at the large majority of colleges that grant AP Statistics credit. |
| 3 | Qualified | Performance equivalent to a B or B minus in college introductory statistics. Demonstrates sufficient understanding of inference and probability to earn college credit at many institutions. Selective colleges may require a 4 or 5 before granting credit for their introductory statistics sequence. |
| 2 | Possibly qualified | Performance equivalent to a C or C minus. Shows partial understanding of statistical procedures but significant gaps in writing inference conclusions in context and in applying the conditions for inference. Rarely earns college credit, though some institutions use it for advanced placement without credit. |
| 1 | No recommendation | Performance below the level sufficient to qualify for college credit or placement. No college credit is earned with a score of 1. |
AP Statistics score distribution
| Year | 5 | 4 | 3 | 2 | 1 | Pass (3+) | Mean |
|---|---|---|---|---|---|---|---|
| 2024 | 15.9% | 22.4% | 23.3% | 21.9% | 16.5% | 61.6% | 2.87 |
| 2023 | 14.8% | 22.6% | 23.6% | 22.4% | 16.6% | 61% | 2.82 |
| 2022 | 15.2% | 21.9% | 22.9% | 22.7% | 17.3% | 60% | 2.8 |
Score distribution figures are approximate values cross-referenced from multiple secondary sources and should be verified against the official College Board annual score distribution PDFs. The three year trend shows a modest upward drift: the mean rose from approximately 2.80 in 2022 to 2.87 in 2024 and the pass rate moved from about 60% to 61.6%. AP Statistics consistently produces a lower pass rate than most AP science courses, reflecting the challenge of applying probability and inference reasoning under timed conditions.
Is AP Statistics curved, and how has the pass rate moved?
AP Statistics is not curved to limit top scores. The pass rate has held near 60 to 62% across recent years, lower than most AP sciences.
AP Statistics uses the same standard setting process as every other AP exam: College Board anchors the composite score boundaries to prior years' difficulty rather than applying a fixed percentage or a bell curve that caps top scores. What makes AP Statistics distinctive is that the pass rate, around 60 to 62%, is lower than AP Biology (approximately 70%) and lower than many AP humanities subjects. The 2024 pass rate was 61.6% with a mean score of 2.87; 2023 was 61.0% with a mean of 2.82; 2022 was approximately 60.0% with a mean near 2.80. Per College Board's annual score distribution data, the trend across those three years shows modest upward drift, but the subject has consistently produced one of the lower mean scores among AP exams. The reason is the subject specific demand: writing inference conclusions fully in context, justifying conditions for inference, and completing the Investigative Task all require skills that are difficult to develop under timed conditions. The curve is not strict; the content is genuinely challenging.
How do AP Statistics scoring guidelines help you study?
The E/P/I rubric is the exact system AP Readers use. Studying it teaches you precisely what separates Essentially Correct from Partially Correct.
Each year's official AP Statistics scoring guidelines lay out, question by question and part by part, the exact criteria that earn Essentially Correct, Partially Correct, or Incorrect on every component. This is the most direct window into what AP Readers actually reward. Students who study the guidelines learn that a conclusion stating only 'reject the null hypothesis' without explaining what that means in the problem context is scored as Partially Correct, not Essentially Correct. They learn that a conditions check that lists 'random, independent, large counts' without verifying each condition against the actual sample size or study design loses a point. They learn that imprecise language about confidence intervals, such as 'there is a 95% probability the parameter is in this interval' rather than 'we are 95% confident the true parameter is in this interval', is explicitly penalized. Working a released free response question under timed conditions and then grading yourself line by line against the official guidelines is the highest return practice technique for AP Statistics, because it converts vague feedback into specific, correctable scoring gaps.
AP Statistics scoring FAQ
How is the AP Statistics exam scored?
Section I (40 multiple choice, 90 minutes) and Section II (6 free response, 90 minutes) each contribute 50% of the final composite. The multiple choice score is a raw count with no penalty for wrong answers. The free response questions are scored using the E/P/I rubric (Essentially Correct, Partially Correct, Incorrect) on each component. College Board combines the two weighted section scores into a composite and converts it to a 1 to 5 AP grade through an annual standard setting process.
What is the E/P/I rubric in AP Statistics?
The E/P/I rubric is the scoring system AP Readers use for every free response question. Each part of each question is rated Essentially Correct (full credit), Partially Correct (partial credit), or Incorrect (no credit). A response earns Essentially Correct by meeting all the stated criteria: verifying conditions completely, stating conclusions in context, and using precise statistical language. A response earns Partially Correct when it satisfies some but not all criteria, such as identifying the correct procedure but omitting the conditions check.
How much is the AP Statistics Investigative Task worth?
Question 6, the Investigative Task, carries more total points than any individual standard free response question (Questions 1 through 5). It is an extended multi part response built around a single data scenario that requires integrating concepts across multiple AP Statistics content areas. Because it contributes disproportionately to the Section II score, a strong performance on Question 6 can recover points lost on the five standard questions, and a weak performance is difficult to overcome within Section II.
What composite score do I need for a 5 on AP Statistics?
There is no fixed cutoff. College Board sets composite boundaries annually through standard setting. As a rough planning heuristic only, recent administrations have placed the 5 boundary in the high 60s to low 70s percent of total composite points and the 3 boundary near the mid 40s. Treat these as approximate and year dependent, not a fixed target, and plan to maximize both sections rather than aim for a specific composite number.
Is the AP Statistics exam curved?
Not in the sense of limiting how many students can score well. AP Statistics uses the same annual standard setting process as all AP exams, which anchors composite boundaries to prior years' difficulty. The lower pass rate of around 60 to 62% reflects the genuine difficulty of the content, particularly writing inference conclusions fully in context and completing the Investigative Task, not a grading policy that caps high scores.
What does a 3 on AP Statistics mean for college credit?
A 3 is the qualifying threshold and earns credit at many colleges, particularly public universities that accept AP credit at score 3 or higher. Selective institutions may require a 4 or 5 before granting credit for their introductory statistics sequence. The AP Credit Savings Calculator on this site lets you check the specific credit policy at target colleges.
How is the AP Statistics multiple choice section scored?
Section I contains 40 multiple choice questions with a 90 minute time limit, all answered independently. There is no penalty for wrong answers, so every question should be answered. The raw correct count is weighted to contribute exactly 50% of the composite. A graphing calculator is required and permitted throughout Section I.
Why does the AP Statistics pass rate sit lower than other AP exams?
AP Statistics consistently produces a pass rate near 60 to 62%, lower than AP Biology (approximately 70%) and many AP humanities subjects, per College Board's annual score distribution data. The gap is attributable to the particular skills the exam demands: writing inference conclusions with full context, justifying all conditions for inference, and integrating multiple statistical concepts in the Investigative Task. These skills are challenging to develop under timed conditions, even for students who understand the procedures.
Why does the AP Statistics curve change every year?
College Board runs a standard setting process each year that anchors composite boundaries for each AP grade to the difficulty of prior administrations. This keeps a score of 4 on one year's exam comparable in meaning to a 4 on a prior year's exam, even if one year's questions happened to be harder or easier. There is no fixed percentage of students who receive each grade.
Where can I find official AP Statistics scoring guidelines?
This page links directly to College Board's hosted scoring guidelines for 2021 through 2025. The 2023 through 2025 guidelines are also listed on the official past exam questions page at apcentral.collegeboard.org/courses/ap-statistics/exam/past-exam-questions. For 2020 and earlier, use the archive hub on that same page. Pair each year's scoring guidelines with the matching free response booklet from the free response questions page to practice grading your own responses.
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