Skip to content
Marlow Works

AP Statistics / Unit 5

Unit 5 · 10–20%

Regression Analysis

Describe, fit, and question a linear relationship between two quantitative variables.

Start first lessonUnit practice

Topics

  • Scatterplots and association
  • Correlation
  • Least-squares regression
  • Interpreting slope and intercept
  • Residuals and residual plots

Lessons

Key terms

Original practice

Marlow Works questions. If this unit does not have its own items yet, you will see other questions from the same course.

1 of 3Exploring One-Variable Data and Collecting Data · easy · multiple choice

A reporter stands at one grocery-store exit and asks shoppers whether they support a new park tax. Why is this a poor way to estimate citywide support?

Original Marlow Works item — not a College Board question.

Take your time—this is practice, not a test.

Review checklist

  1. 01Read the scatterplot before trusting r or the line.
  2. 02Interpret slope and intercept with units and the word predicted.
  3. 03Check the residual plot for leftover curve or changing spread.

Related resources

External links with reuse status. Marlow Works is independent and does not copy restricted exam or textbook material.

  • Official / link only

    AP Statistics course page

    Official revised 2026–27 five-unit framework.

    College Board · All rights reserved · accessed 2026-10-01

    Open source

  • CC BY — attribution required

    Collaborative Statistics

    Open statistics text for distributions, probability, and inference.

    Open Textbook Library listing · CC BY · accessed 2026-10-01

    Open source