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AP Biology / Subject guide · 2026–27 redesign

How Did AP Statistics Change This Year? The 2026–27 Redesign Explained

Short answer: AP Statistics was consolidated from 9 units to 5, five topic areas were removed, Algebra 2 is no longer required, the May 2027 exam is fully digital in Bluebook, and the Free-Response section shrank from 6 questions to 4 (worth 10 points each) with the Investigative Task retired.

Last updated: July 2026 · Source: College Board AP Statistics Course and Exam Description (Effective Fall 2026)

TL;DR — what changed this year: 9 units → 5 units; five topic areas removed (departures from linearity, combining random variables, geometric distribution, chi-square goodness-of-fit, and all inference for slopes); Algebra 2 downgraded from required to recommended; exam moved fully digital in the Bluebook app with built-in Desmos; FRQ section shrank from 6 questions (including the Investigative Task) to 4 standard 10-point questions; course now anchored by 4 Science Practices instead of 6 skills. If your prep book was printed before summer 2026, roughly a third of it is out of scope.

Old AP Statistics vs. new AP Statistics: side-by-side

DimensionOld course (through May 2025)New course (from May 2027)
Units9 units5 units
Exam formatPaper-and-pencilFully digital in Bluebook
CalculatorBring your own graphing calculatorBring your own + built-in Desmos in Bluebook
MCQ section40 questions / 90 min42 questions / 90 min
FRQ section6 questions incl. Investigative Task4 questions × 10 points; no Investigative Task
Weight per FRQ~8% (Q1–5) / ~25% (Investigative Task)12.5% each — all equal
Skills framework6 skills across 4 categories4 Science Practices
Algebra 2 prerequisiteRequiredRecommended, not required
Removed topics—Departures from linearity, combining random variables, geometric distribution, chi-square goodness-of-fit, inference for slopes

What's new for 2026–27

  • Consolidated to 5 units from the previous 9. Content is organized around exploring data, probability, inference for proportions, inference for means, and regression.
  • Topics removed: departures from linearity (old 2.9), combining random variables (old 4.9), the geometric distribution (old 4.12), chi-square goodness-of-fit (old 8.2/8.3), and the entire old Unit 9 — inference for slopes is no longer on the exam.
  • Fully digital exam starting May 2027, administered in the College Board's Bluebook app with a built-in Desmos graphing calculator.
  • New FRQ format: 4 free-response questions, each worth 10 points, instead of 6 questions with an Investigative Task. The Investigative Task is retired.
  • Algebra 2 is recommended, not required. The mathematical foundation is now built within the course.
  • Four Science Practices anchor everything: Formulate Questions, Collect Data, Analyze Data, and Interpret Results.

What stayed the same

  • Exam length: Still 3 hours total — 90 minutes MCQ + 90 minutes FRQ.
  • 50/50 section weighting: Multiple Choice and Free Response each contribute 50% of the score.
  • 1–5 scoring scale and the same score-to-credit conventions at colleges.
  • Provided reference materials: Formula sheet, z, t, and chi-square tables are still supplied in the Bluebook app.
  • Core inference workflow: State-Plan-Do-Conclude (or PHANTOMS) is still the backbone of every FRQ that asks for a confidence interval or test.

Why did the College Board change AP Statistics?

Three drivers, per the College Board's public rationale: (1) broaden access by removing the Algebra 2 gate so more students can take the course, (2) modernize the assessment by moving to Bluebook alongside other digital APs, and (3) refocus the course on statistical reasoning rather than by-hand calculation now that tools like Desmos make arithmetic trivial. The removed topics were the ones most often taught mechanically (geometric distribution, chi-square goodness of fit) or least frequently used in introductory college statistics (inference for slopes).

Exam format at a glance

SectionQuestionsTimeScore weight
Section I: Multiple Choice42 questions90 minutes50%
Section II: Free Response4 questions (10 points each)90 minutes50%
Total46 questions3 hours100%

2027 exam date: Friday, May 14, 2027, at 12:00 PM local time (subject to College Board's final schedule).

Section I — Multiple Choice

42 questions in 90 minutes — roughly 2 minutes and 8 seconds per question. Questions are single-select with four options. Expect a heavy dose of graph, table, and computer- output reading; expect calculator work; expect at least one question per science practice per unit weighting.

Section II — Free Response

  • FRQ 1 — Assesses Practice 1 (Selecting Statistical Methods) and Practice 2 (Data Analysis). Budget ~20 minutes.
  • FRQ 2 — Assesses Practice 3 (Using Probability and Simulation) and Practice 4 (Statistical Argumentation). Budget ~20 minutes.
  • FRQ 3 (Inference focus) — Confidence interval or significance test. Assesses Practices 2, 3, and 4. Budget ~25 minutes.
  • FRQ 4 (Multi-focus) — Combines multiple content areas from across the course; assesses Practices 2, 3, and 4. Budget ~25 minutes.

Each FRQ is worth 10 raw points and contributes 12.5% of the total exam score. A graphing calculator is required; Bluebook provides a built-in Desmos calculator, and you may also bring an approved external graphing, scientific, or four-function calculator. Formula sheets and probability tables (z, t, and chi-square) are provided.

The 5 units: what's on the exam

UnitNameWeightCovers
1Exploring One-Variable Data and Collecting Data20–30%Categorical/quantitative data, distributions, sampling, experiments
2Probability, Random Variables & Distributions15–25%Probability rules, random variables, binomial, normal, sampling distributions
3Inference for Categorical Data: Proportions15–25%1- and 2-proportion z-intervals and z-tests, chi-square for independence/homogeneity
4Inference for Quantitative Data: Means10–20%1- and 2-sample t-intervals and t-tests, matched pairs
5Regression Analysis10–20%Scatterplots, correlation, LSRL, residuals, prediction

Units 1, 2, and 3 together are 50–80% of the exam. If you have limited time, protect those first. Regression (Unit 5) is now purely descriptive/predictive — inference for slopes is no longer tested.

The 4 Science Practices

  1. Selecting Statistical Methods (5–10%) — Identify the right procedure for the question and data.
  2. Data Analysis (20–30%) — Describe distributions and summarize sample data.
  3. Using Probability and Simulation (25–35%) — Compute and interpret probabilities and simulate sampling distributions.
  4. Statistical Argumentation (25–35%) — Draw and justify conclusions in context.

Every FRQ is scored against the practices, not just the content. Practice 4 — conclusions in context — is where students most often leave points on the table.

Score distribution

The last old-format AP Statistics exam was administered in May 2025. In that administration, roughly 60% of students scored a 3 or higher, with about 15% earning a 5. The 2027 exam is the first fully-digital, 5-unit administration; historical scoring patterns should be treated as approximate until the College Board publishes 2027 data.

How to study

  1. Learn the four-step template (State-Plan-Do-Conclude) for every inference procedure — see our FRQ tips guide.
  2. Master the calculator. In Bluebook, that means Desmos. Time yourself running 1-prop z-tests, 2-sample t-tests, chi-square for independence, and LSRL output.
  3. Practice reading computer output. Roughly one FRQ and several MCQs give you Minitab-style or Desmos-style regression output and ask you to interpret it.
  4. Write conclusions in context. Never "reject H₀" without naming the parameter and the population.
  5. Use a subject-scoped plan — see our 8-week study plan.

FAQ

How did the AP Statistics class change this year?
Starting in the 2026–27 school year, AP Statistics was consolidated from 9 units into 5, five topic areas were removed (departures from linearity, combining random variables, the geometric distribution, chi-square goodness-of-fit, and the entire old Unit 9 on inference for slopes), Algebra 2 became a recommended rather than required prerequisite, and the exam moved fully digital in the College Board's Bluebook app. The Free-Response section shrank from 6 questions (including the Investigative Task) to 4 questions worth 10 points each, and the course is now anchored by 4 Science Practices instead of the old 6 skills.
What changed for AP Statistics in 2026–27?
Five things changed: (1) 9 units → 5 units, (2) topics removed — departures from linearity, combining random variables, geometric distribution, chi-square goodness of fit, and all inference for slopes, (3) Algebra 2 is no longer required, (4) the May 2027 exam is fully digital in Bluebook with a built-in Desmos calculator, and (5) the FRQ section is now 4 questions × 10 points instead of 6 questions plus an Investigative Task.
Did AP Statistics get easier in 2026–27?
The course is shorter and less computationally heavy — inference for slopes and the geometric distribution are gone, and Desmos handles most arithmetic — but the exam is not easier to score well on. Each of the 4 FRQs now carries 12.5% of your total score (up from ~8% previously), so a single weak response hurts more. The College Board also increased the emphasis on Practice 4 (Statistical Argumentation), which is historically the lowest-scoring skill.
What topics were removed from AP Statistics for 2026–27?
The College Board removed: departures from linearity (old topic 2.9), combining random variables (old 4.9), the geometric distribution (old 4.12), chi-square goodness-of-fit tests (old 8.2 and 8.3), and the entire old Unit 9 on inference for the slope of a regression line. Roughly a third of a pre-2026 prep book is now out of scope.
How many units does AP Statistics have now?
5 units: (1) Exploring One-Variable Data and Collecting Data (20–30%), (2) Probability, Random Variables & Distributions (15–25%), (3) Inference for Categorical Data: Proportions (15–25%), (4) Inference for Quantitative Data: Means (10–20%), and (5) Regression Analysis (10–20%). The old 9-unit structure was retired at the end of the 2025–26 school year.
Is the AP Statistics exam digital in 2027?
Yes. The May 2027 AP Statistics exam is administered fully digitally in the College Board's Bluebook app. Both the multiple-choice and free-response sections are typed. A four-function, scientific, or graphing calculator is permitted throughout, and Bluebook includes a built-in Desmos graphing calculator.
How many questions are on the new AP Statistics exam?
42 multiple-choice questions in Section I (90 minutes, 50% of the score) and 4 free-response questions in Section II (90 minutes, 50% of the score). Each FRQ is worth 10 points and contributes 12.5% of the total exam score. Total: 46 questions in 3 hours.
What happened to the AP Statistics Investigative Task?
The Investigative Task (the old FRQ 6, worth ~25% of the FRQ section) was retired starting with the May 2027 exam. It was replaced by two standard, 10-point free-response questions. Multi-focus items still exist, but they no longer carry the disproportionate weight the Investigative Task did.
Is Algebra 2 still required for AP Statistics?
No. Starting in 2026–27, Algebra 2 is a recommended but no longer required prerequisite. The College Board reframed the course so that the mathematics needed for the exam is developed within the course itself.
When does the new AP Statistics course start?
The new 5-unit AP Statistics course took effect in the fall of the 2026–27 school year. The first exam under the new format is Friday, May 14, 2027. Students studying from a prep book printed before summer 2026 should assume roughly a third of the content is either out of scope or reorganized.
Are old AP Statistics practice exams still useful?
Partially. MCQs and FRQs on Units 1–5 content that survived the redesign (one-variable data, sampling, probability, sampling distributions, inference for proportions and means, and descriptive regression) remain useful. Skip anything on departures from linearity, combining random variables, geometric distribution, chi-square goodness of fit, or inference for slopes. Also expect the digital Bluebook interface — Desmos, no scratch scanning — to change your pacing on multiple-choice.
What is a good AP Statistics score?
A 3 earns college credit at most institutions and is considered passing. A 4 or 5 is strong and required for credit at more selective schools. In 2025, roughly 60% of students scored a 3 or higher.
Is AP Statistics hard?
AP Statistics is conceptually demanding rather than computationally hard. Most calculations are handled by a calculator; the challenge is choosing the right procedure, checking conditions, and writing precise conclusions in context. Students who master the four-step inference template (State, Plan, Do, Conclude) consistently outperform students who focus only on the arithmetic.
Which unit is worth the most on AP Statistics?
Unit 1 (Exploring One-Variable Data and Collecting Data) is the highest-weighted single unit at 20–30% of the exam. Units 2 and 3 each weight 15–25%, and Units 4 and 5 each weight 10–20%.

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