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AP Statistics

5A–5B Day 1 Exam Practice 2

Shared by Ashton · Oct 20, 2026 · 3 plays

100 more AP-exam-style multiple-choice questions for AP Statistics 5A (scatterplots, describing relationships, correlation r, outliers, units) and 5B Day 1 (regression lines, prediction, residuals, extrapolation, slope and intercept). Every answer choice has an explanation. All new contexts, no repeats from the first Exam Practice set.

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100 questions across 5 sections. After every answer you’ll see why each choice is right or wrong, not just the one you picked.

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Sample questions

Open a question to see the answer choices and the correct answer.

A piano teacher records how many minutes each of 22 students practiced last week and how many mistakes each made in a recital piece. Which is the explanatory variable?
  1. A. Number of mistakes in the piece
  2. B. The 22 students
  3. C. Minutes practiced last week ✓
  4. D. The recital piece

Correct answer: C. Practice time is what we'd use to predict or explain the number of mistakes.

On a scatterplot of mistakes (y) vs. minutes practiced (x), where should the response variable go?
  1. A. On the horizontal axis
  2. B. On either axis; it never matters
  3. C. In a separate dotplot next to the graph
  4. D. On the vertical axis ✓

Correct answer: D. The response goes on the y (vertical) axis; the explanatory variable goes on the x axis.

A counselor records SAT Math and SAT Reading scores for 60 seniors. Which statement about choosing axes is best?
  1. A. Neither is clearly explanatory, so either can go on the x axis ✓
  2. B. Math must go on x because it comes first on the test
  3. C. Reading must go on x because it causes math scores
  4. D. A scatterplot can't be used because the scores are on the same scale

Correct answer: A. When neither variable explains the other, you can put either on x.

A scatterplot shows height and arm span for the 28 students in a class. What does each dot represent?
  1. A. The average height of the class
  2. B. One student's height and arm span ✓
  3. C. One measurement of either height or arm span
  4. D. The number of students with a given height

Correct answer: B. Each point is one observational unit (a student) with its x and y values.

Points on a scatterplot follow a smooth curve very closely, with almost no scatter around it. How should the strength and form be described?
  1. A. Strong and nonlinear ✓
  2. B. Weak, because it isn't a line
  3. C. Strong and linear
  4. D. Moderate, because curves are always moderate

Correct answer: A. Strength is how closely points follow the form. These hug a curve, so the relationship is strong but curved.