Which feature permits a cause-and-effect conclusion?
Correct answer: Random assignment
Why: Random assignment balances lurking variables and supports causal inference.
AP Statistics Practice Questions
Answer original AP-style diagnostic questions, review explanations, and identify the next unit to study.
AP Statistics diagnostic practice set
These are original practice questions, not copied College Board items. Use official released questions for final calibration.
Question 1 of 3
Review the reasoning after you finish
The interactive set keeps answers hidden while you work. This review section remains crawlable and gives every student a complete correction path after the attempt.
A p-value is the probability of
Correct answer: Results at least this extreme assuming the null
Why: A p-value is conditional on the null hypothesis and measures extremeness.
A residual equals
Correct answer: Observed minus predicted
Why: Residual = observed response - predicted response.
Practise each section under its own calculator rule
Practising with a calculator you will not be handed is the most common way a practice score stops predicting an exam score. Set each practice block up to match the section it rehearses.
| Section or part | What you may use | What that means for your work |
|---|---|---|
| Multiple choice | Graphing calculator with statistics functions | Use it for normalcdf, invNorm, and binomial probabilities instead of the tables when speed matters. |
| Free response | Graphing calculator with statistics functions | The calculator gives the number; the rubric pays for the name of the procedure and the conditions. |
| Provided for the whole exam | Formula sheet and tables | Formulas and the normal, t, and chi-square tables are given. Do not spend study time memorising them - spend it on when each applies. |
How practice should cover the complete course
One-Variable Data and Collecting Data
Distributions, sampling, experiments, bias, ethical data collection
20–30%: practice one recognition question, one direct application, and one mixed prompt that requires you to choose this unit without being told.
Probability, Random Variables, and Distributions
Simulation, probability rules, discrete and continuous variables
15–25%: practice one recognition question, one direct application, and one mixed prompt that requires you to choose this unit without being told.
Inference for Categorical Data: Proportions
Sampling distributions, intervals, and tests for proportions
15–25%: practice one recognition question, one direct application, and one mixed prompt that requires you to choose this unit without being told.
Inference for Quantitative Data: Means
Intervals and tests for means and paired data
10–20%: practice one recognition question, one direct application, and one mixed prompt that requires you to choose this unit without being told.
Regression Analysis
Two-variable data, linear models, inference for slopes
10–20%: practice one recognition question, one direct application, and one mixed prompt that requires you to choose this unit without being told.
Use the result to focus your AP Statistics review
Read the score as a map, not a verdict
Each answer shows a relationship between course knowledge and an exam decision. A miss may mean that a definition is unclear, a representation was misread, or the right method was not selected. Compare each miss with these AP Statistics priorities before choosing the next unit or practice set.
- Conditions before inference
- Parameter versus statistic language
- Random assignment versus random sampling
- Probability and simulation
- Context-rich conclusions
Next steps after the AP Statistics diagnostic
Use a four-step correction cycle
- Write the rule or idea behind every miss.
- Solve a second problem of the same type without looking back.
- Mix that skill with two older units tomorrow.
- Complete official released questions under authentic timing.
Questions about AP Statistics exam practice
How many questions are on the AP Statistics exam?
The published format is 42 questions on multiple choice and 4 questions on free response. Multiple choice — About 2.1 minutes each. Reading the scenario is most of the work; the arithmetic is usually small. Free response — About 22 minutes per question. These are long, multi-part scenarios - read all parts before writing part (a).
Which AP Statistics units should I practise first?
Start with the heaviest published weightings: One-Variable Data and Collecting Data (20–30%), Probability, Random Variables, and Distributions (15–25%), Inference for Categorical Data: Proportions (15–25%). Then repair whichever earlier unit those depend on.
Can I use a graphing calculator while I practise for AP Statistics?
Only where the exam allows one, and practising otherwise builds the wrong habit. Multiple choice: Use it for normalcdf, invNorm, and binomial probabilities instead of the tables when speed matters. Free response: The calculator gives the number; the rubric pays for the name of the procedure and the conditions. Provided for the whole exam: Formulas and the normal, t, and chi-square tables are given. Do not spend study time memorising them - spend it on when each applies.
What is the most common way students lose points on AP Statistics?
Never write 'accept the null hypothesis' or 'this proves'. You either reject or fail to reject, and neither proves anything.
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