AP Statistics Exam Overview
AP Statistics • Exam Guide

Exam Overview & Strategy

Based on College Board CED
1

The Exam Format

The AP Statistics exam is 3 hours long. It rigorously tests your ability to select methods, analyze data, use probability/simulation, and build statistical arguments.

Section I: MCQ
Multiple-Choice 40 Questions (90m)
*Tests all 4 skill categories, heavily emphasizing Probability & Simulation (30-40%) and Argumentation (25-35%).
50% of Total Score
Section II: FRQ
Part A: Free Response 5 Questions (65m)
*Focuses on Exploring Data, Collecting Data, Probability, and Inference. (37.5% of total score)
Part B: Investigative Task 1 Question (25m)
*Applies statistical skills to new, non-routine contexts. (12.5% of total score)
50% of Total Score
2

Formula Sheet & Tables

Provided Resource Material

Unlike some math exams, AP Statistics provides an extensive reference packet. Memorizing formulas is far less important than knowing when and how to use them. You will be provided with:

  • Formulas: Descriptive Statistics, Probability, Distributions, and Inferential Statistics test mechanics.
  • Table A: Standard Normal Probabilities (z-table).
  • Table B: t-Distribution Critical Values.
  • Table C: Chi-Square (χ²) Distribution Critical Values.

Strategy: Use class time to familiarize yourself with the exact layout of the AP Formula Sheet so you aren't hunting for standard errors or critical values on test day.

3

Calculator Policy

A graphing calculator with statistical capabilities is expected and heavily relied upon for both sections of the exam.

⚠️
Required Calculator Capabilities: Your calculator MUST be able to perform:
1) Standard univariate and bivariate summaries.
2) Linear regression modeling and scatterplots.
3) Distributions (Normal, Binomial, Geometric, t, and χ²).
4) Built-in statistical inference tests and confidence intervals (1-PropZTest, T-Interval, etc.).
4

Where Should You Focus?

The exam requires a comprehensive understanding of the 9 units, but Units 1, 3, 4, 6, and 7 carry the heaviest weightings for the Multiple-Choice section.

Unit 1: Exploring One-Variable Data 15-23%
Unit 2: Exploring Two-Variable Data 5-7%
Unit 3: Collecting Data 12-15%
Unit 4: Probability & Random Variables 10-20%
Unit 5: Sampling Distributions 7-12%
Unit 6: Inference for Proportions 12-15%
Unit 7: Inference for Means 10-18%
Unit 8: Chi-Square 2-5%
Unit 9: Inference for Slopes 2-5%
5

Score Estimator

The AP Statistics exam is graded out of 100 points. Since statistics focuses heavily on rigorous justification, the curve generally requires about a 68-70% raw score to secure a 5.

Composite Score (100 points total) AP Score Classification
~68 - 100 5 Extremely Well Qualified
~53 - 67 4 Well Qualified
~40 - 52 3 Qualified
~29 - 39 2 Possibly Qualified
6

AP Stats Success Strategy

Rule 1

Context is Everything

A naked number means nothing in AP Stats. Every interpretation (slope, p-value, confidence interval) MUST be tied back to the specific real-world scenario and variables presented in the prompt.

Rule 2

Name Your Tests & Check Conditions

Before performing inference, explicitly name the procedure (e.g., "Two-Sample t-Test for $\mu_1 - \mu_2$") and verify the required conditions (Random, 10% Rule, Normal/Large Sample). Do not just write "SRS" without verifying it in context!

Rule 3

Respect the Investigative Task

FRQ #6 is weighted heavily (12.5% of the total exam). It asks you to apply concepts to an unfamiliar situation. Do not leave it blank—manage your time so you have a full 25 minutes for this task alone.

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