AP Statistics
Free AP Statistics practice built for the redesigned course: 5 units, 55 topics, first exam May 2027. Lessons target the 65 documented reasoning errors that cost the most points, from misread p-values to confidence levels treated as probabilities. Every topic has a lesson, a diagnostic and targeted drills, and every unit has a cumulative.
Start with Unit 1 › See the exam format
Practice
Diagnose, drill, verify
01 · Learn
Topic lessons
Scenario-based lessons for the redesigned course, built around 65 documented AP Statistics misconceptions across the 5 units. All five units are live, from exploring and collecting data through probability, inference, and regression.
02 · Diagnose
Topic diagnostics
Short topic-level assessments that identify which statistical reasoning errors are costing you points. One per topic, all 55 live, each reached from its topic page or from the diagnostic index.
03 · Drill
Targeted drills
One misconception at a time, MCQ format, feedback after every question. Reached from your diagnostic result, so you only drill what actually broke. Each unit closes with a cumulative that mixes every topic.
Reference
Resources and guides
Arcade
Mistake Master Blaster
One arcade game per unit. Fire at the right answer; wrong shots wake the misconception you fell for.
Tool
Score Calculator
Estimate your 1 to 5 from multiple-choice and free-response raw scores.
Reference
Formulas to Memorize
Descriptive stats, probability, sampling distributions, and inference: what the provided sheet covers and what to know cold.
Guide
FRQ Guide
The four free-response questions, what each assesses, and how to write conclusions that earn credit.
Overview
Exam Format
Sections, timing, scoring, and what changed in the 2026 redesign.
Framework
All 5 Units
Course units with exam weighting, topic counts, and what each unit covers.
Difficulty
Is AP Statistics Hard?
What actually makes it tough: language precision and interpretation, not computation, and what to do about it.
Hub
Practice Modes
All the practice modes with guidance on when to use each.
By unit
The course at a glance
Why not just do more problems?
Most AP Statistics points are lost to a small set of predictable reasoning errors: reading a p-value as the probability the null hypothesis is true, treating a 95 percent confidence level as a 95 percent chance the parameter sits in this one interval, describing a distribution with no context or units, claiming causation from an observational study, and confusing the standard deviation of a sample with the standard deviation of a sampling distribution.
If you hold a misconception, more practice with it intact reinforces it. The biggest score gains usually come from finding the two or three misconceptions that are costing you points and addressing them directly. That is what Mistake Master is built to do.