Exam overview

The Revised AP Statistics Exam Format

Starting with the May 11, 2027 administration (Course and Exam Description effective Fall 2026), AP Statistics is a 3-hour, fully digital exam administered in the Bluebook testing application. Both sections are weighted equally at 50% of your composite score.

Section I: Multiple Choice

You have just over 2 minutes per question (90 minutes for 42 questions). Every question has four options (A–D). Most are standalone discrete questions, but two are 3-question sets built around a shared scenario:

• Set 1: Probability, random variables, and probability distributions (Unit 2).
• Set 2: Regression analysis (Unit 5).

Questions are weighted across the four Statistical Practices: Practice 1: Formulate Questions (5–10%), Practice 2: Collect Data (20–30%), Practice 3: Analyze Data (25–35%), and Practice 4: Interpret Results (25–35%).

Section II: Free Response

You type all responses directly into autosaving boxes in Bluebook using standard keyboard notation or the symbols menu. You are given scratch paper for planning and calculations. The four questions appear in a fixed order, worth 10 points each:

• Question 1: Formulating questions and collecting data (Practices 1 and 2).
• Question 2: Analyzing data and interpreting results (Practices 3 and 4).
• Question 3: Inference—carrying out a complete hypothesis test or confidence interval.
• Question 4: Multi-focus question synthesizing Practices 2, 3, and 4 across multiple content units.

What Changed in the 2026–27 Revision

If you are practicing with older AP Statistics materials, you must filter out retired topics and adjust to the new scoring model.

1. Format and Scoring Overhaul:
   • Multiple-choice items now have 4 options instead of 5, and the count increased from 40 to 42.
   • Free-response dropped from 6 questions (including the old investigative task) to 4 equally weighted 10-point questions.
   • Scoring shifted from holistic E/P/I (Essentially Correct, Partially Correct, Incorrect) rubrics to analytic 10-point scoring guidelines. Each point is tied to a specific component and, except where a scoring guideline says otherwise, is earned independently.
2. Calculator Policy: Nongraphing scientific calculators are no longer allowed. You must use either the built-in Bluebook Desmos graphing calculator or an approved handheld graphing calculator with statistical capabilities.
3. Removed Content (Do Not Study):
   • Combining random variables (means and variances of sums, differences, or linear transformations of independent random variables; note: rescaling and shifting a single data set in Topic 1.7 remains).
   • The geometric distribution.
   • Chi-square goodness-of-fit test (homogeneity and independence remain).
   • Analyzing departures from linearity (data transformations, logarithmic models, influential points, and high-leverage points).
   • The standard deviation of the residuals ($s$) and inference for the slope of a regression line ($t$-tests and $t$-intervals for ).

The 5 Units and 4 Statistical Practices

The course is organized into five content units across 55 topics:

• Unit 1: Exploring One-Variable Data and Collecting Data. Categorical and quantitative displays, describing distributions (shape, center, variability, unusual features), summary statistics, $z$-scores, investigative questions, sampling methods, bias, and experimental design (completely randomized, randomized block, matched pairs).
• Unit 2: Probability, Random Variables, and Probability Distributions. Two-way tables, simulation, conditional probability, independence, discrete random variables, binomial distributions, normal distributions, and sampling distributions with the Central Limit Theorem.
• Unit 3: Inference for Categorical Data: Proportions. One- and two-sample $z$-intervals and $z$-tests for proportions, Type I and Type II errors, power, and chi-square ($\chi^2$) tests for homogeneity and independence.

Scoring, Cut Points, and What a 5 Requires

Courselo calculates your composite score as a weighted percentage:

Every correct multiple-choice answer adds about 1.19% to your composite, and every single free-response point adds 1.25%. Because College Board has not yet released official cut points for the revised exam, Courselo uses conservative estimated thresholds:

What Top Scorers Do Differently

1. They Write for the Analytic Checklist

AP Readers scan your typed response for specific required components. Top scorers structure every inference procedure (Question 3) to go after each of its 10 points:

• Identify: Name the exact procedure (e.g., two-sample $t$-test for a difference between population means).
• Parameters & Hypotheses: Define parameters in context with the order of subtraction (e.g., $\mu_A - \mu_B$) and state $$ (always an equality) and using parameter symbols, never sample statistics like or .

2. They Never Use Naked Calculator Speak

Writing only 1 - binomcdf(20, 0.3, 7) or normalcdf(1.5, 999) does not show your work. To earn the point on probability and distribution questions, you must name the distribution, state its parameters, and write the probability statement with boundary and direction: “Binomial distribution with $n = 20$ and $p = 0.3$; $P(X \ge 8) = 0.2277$.”

3. They Master Digital Notation in Bluebook

Do not waste time hunting through symbol menus on Section II. AP Readers accept standard keyboard equivalents from the AP Statistics Digital Response Guidelines:

Preparation Roadmap

1. Master Units 1 and 5 Early: Describing distributions (Shape, Center, Variability, Unusual features—always in context with comparative language like “higher than” for two groups) and interpreting regression output ($b$, $a$, $r$, $r^2$, and residuals) come up often in multiple choice and can appear in Questions 2 and 4.
2. Build Probability Rigor (Unit 2): Focus on two-way table conditional probabilities, binomial vs. normal setups, and how sample size $$ affects the standard deviation of sampling distributions ( and ).