AP®StatisticsCollege BoardStudy GuidesUnit 2: Probability, Random Variables, and Probability DistributionsUnit 2 OverviewUnit 2 Topics

Unit 2 Topics (College Board AP® Statistics): Study Guide

Written by: Dan Finlay

Reviewed by: Roger B

Updated on 5 June 2026

Probability, random variables, and probability distributions topic list

The table below shows the topics from the Course and Exam Description (opens in a new tab) document
You can find which study guide explains each topic

College Board Topic number	College Board Topic name	Relevant study guide
2.1	Tabular and Graphical Representations for the Distributions of Two Categorical Variables	Two-Way Tables & Relative Frequencies Bar Graphs & Mosaic Plots
2.2	Summary Statistics for Two Categorical Variables	Two-Way Tables & Relative Frequencies
2.3	Estimating Probabilities Using Simulation	Estimating Probability using Relative Frequency
2.4	Introduction to Probability	Probabilities of Single Events Introduction to Combined Events
2.5	Mutually Exclusive Events	Addition Rule & Mutually Exclusive Events
2.6	Conditional Probability	Conditional Probability
2.7	Independent Events and Unions of Events	Multiplication Rule & Independent Events Probabilities of Combined Events using Tree Diagrams Probabilities of Combined Events using the Rules
2.8	Introduction to Random Variables and Probability Distributions	Probability Distributions for Discrete Random Variables Cumulative Probability Distributions for Discrete Random Variables
2.9	Parameters of Random Variables	Mean & Standard Deviation of a Discrete Random Variable
2.10	The Binomial Distribution	Introduction to Binomial Distributions Probabilities for Binomial Distributions
2.11	The Normal Distribution	Properties of Normal Distributions Comparing Normal Distributions Finding Probabilities from Normal Distributions Inverse Normal Calculations Estimating Parameters of Normal Distributions
2.12	Sampling Distributions and the Central Limit Theorem	Introduction to Sampling Distributions The Central Limit Theorem

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Unit 2 Topics (College Board AP® Statistics): Study Guide

Probability, random variables, and probability distributions topic list

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Author: Dan Finlay

Reviewer: Roger B