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AP Statistics Practice Worksheets & Answer Key

Download an 8-question AP Statistics worksheet with a separate answer and explanation section. The selected text questions work without a screen or an account.

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Version 2026-10-27 · Original foundation materials · No sign-up

What this collection covers

2026–27 statistics practice: expanded partial coverage.

This fixed sample includes one question per selected skill before additional families. Questions requiring a separate diagram are excluded from this text worksheet. It is an untimed study resource with working space, rather than an official mock examination.

Author-reviewed learning materials. Independent educator review is pending; question difficulty has not been calibrated with learner results. Check coverage and gaps before planning your preparation.

Inside the printable worksheet

8 original questionsSeparate explanationsUS Letter · PDF · Version 2026-10-27

Print the question section first. Keep the answer section separate until you have written your method or reason. Use the linked lessons to review a missed idea, then start a new set in the practice tool.

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Questions included in this PDF

QUESTION 1 · Ask statistical questions

A study of 24 library visitors records the service-category label for each observation. How should this variable be classified?

  1. A sampling distribution
  2. Quantitative
  3. A population
  4. Categorical
Read the answer and explanation

Answer: Categorical

  1. Identify what is recorded for each observational unit.
  2. Ask whether numerical magnitude and differences have a meaningful interpretation.
  3. The recorded variable is categorical.
Review the lesson
QUESTION 2 · Condition on the right group

P(A) = 2/5, P(B) = 3/10, and P(A and B) = 1/10. Find P(A or B).

  1. 3/25
  2. 3/5
  3. 1/10
  4. 1/2
Read the answer and explanation

Answer: 3/5

  1. Add the two event probabilities.
  2. Subtract the overlap counted twice.
  3. P(A or B) = 3/5.
Review the lesson
QUESTION 3 · Build and interpret intervals

A proportion estimate is 7/10 with SE = 1/50. Using multiplier 2, what is the upper interval endpoint?

  1. 18/25
  2. 33/50
  3. 37/50
  4. 1/25
Read the answer and explanation

Answer: 37/50

  1. Margin of error = 2 × 1/50 = 1/25.
  2. Add the margin to the estimate.
  3. Upper endpoint = 37/50.
Review the lesson
QUESTION 4 · Compare groups carefully

Two independent groups have sample proportions 9/10 and 3/10. What is the estimated difference, first minus second?

  1. 3/5
  2. 9/10
  3. 6/5
  4. 3/10
Read the answer and explanation

Answer: 3/5

  1. Keep the direction of subtraction fixed.
  2. Subtract 3/10 from 9/10.
  3. The estimated difference is 3/5.
Review the lesson
QUESTION 5 · Read a fitted relationship

A fitted line predicts y-hat = 11 + 2x. What response is predicted at x = 4?

Read the answer and explanation

Answer: 19

  1. Substitute x = 4 into the fitted line.
  2. Compute 11 + 2 × 4.
  3. The predicted response is 19.
Review the lesson
QUESTION 6 · Describe center and position

Four delivery delays, in minutes, are 5, 7, 9, 11. What is their mean?

Read the answer and explanation

Answer: 8

  1. Add the four delays: 32.
  2. Divide the total by 4: 8.
  3. The result describes the arithmetic center in minutes.
Review the lesson
QUESTION 7 · Model repeated chance outcomes

X takes values 0, 3, and 6, with probabilities 1/4, 1/2, and 1/4. What is E(X)?

  1. 3
  2. 6
  3. 9/4
  4. 9/8
Read the answer and explanation

Answer: 3

  1. Multiply each value by its probability.
  2. The weighted sum is 0 + 3/2 + 6/4.
  3. E(X) = 3.
Review the lesson
QUESTION 8 · Reason from a null model

For a one-proportion test, p0 = 1/2, observed proportion = 7/10, and the null standard error is 1/20. What is z?

  1. 1/5
  2. -4
  3. 4
  4. 80
Read the answer and explanation

Answer: 4

  1. Subtract the null proportion from the sample proportion.
  2. Divide by the null standard error.
  3. z = 4.
Review the lesson

Sources and preparation route

These prompts and explanations are the site's original learning materials. The reference links below support the selected skills; they are not endorsements or official examination questions.

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