Is a bus route number quantitative?
Answer & explanation
Learn: Ask statistical questionsNo. It labels a category; differences between route numbers do not measure amount.
All examsAP StatisticsFoundation path
View coverage AP Statistics Flashcards & Study Review
Read 12 sample cards from the 80-card AP Statistics foundation collection. Try recalling each answer before checking the explanation.
Version 2026-10-27 · Original foundation materials · No sign-up
What this collection covers
2026–27 statistics practice: expanded partial coverage.
The cards preview selected ideas; they do not measure readiness for the whole examination. Your personal review schedule is available in the review tool.
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.
Sample flashcards, with answers
P(A)=.4, P(B)=.3, overlap=.1. What is the union?
Answer & explanation
Learn: Condition on the right group0.6 = 0.4+0.3−0.1.
Estimate .60, margin .04: what are the interval endpoints?
Answer & explanation
Learn: Build and interpret intervals0.56 and 0.64.
Independent estimates have SEs 3 and 4. What is SE of their difference?
Answer & explanation
Learn: Compare groups carefully5 = √(3²+4²).
Observed y=18 and predicted y=21. What is the residual?
Answer & explanation
Learn: Read a fitted relationship−3. The model overpredicts by 3 response units.
What is the median of 8, 2, 5?
Answer & explanation
Learn: Describe center and position5. Sort first: 2, 5, 8.
Can an expected count be 2.4?
Answer & explanation
Learn: Model repeated chance outcomesYes. It describes a long-run average, not a possible count in one trial.
p=.02 and alpha=.05: reject or fail to reject?
Answer & explanation
Learn: Reason from a null modelReject the null under the rule p≤alpha.
Four paired differences have mean1 and sampleSD2. What t statistic tests zero population mean change?
Answer & explanation
Learn: Choose a t procedure from the study design1: the standard error is 2/√4=1, so t=(1−0)/1=1.
What gives correlation its sign when R squared is supplied?
Answer & explanation
Learn: Decide what a fitted line can supportThe slope direction of the simple fitted line.
Every measurement increases by 5. What happens to SD?
Answer & explanation
Learn: Spread and normal modelsIt stays unchanged: all pairwise distances are preserved.
What is distributed in a sampling distribution of means?
Answer & explanation
Learn: Separate data from statisticsMeans from repeated samples of a fixed size, not the individual data values.
Use the cards as a recall routine
- Read the prompt and explain your answer before looking below it.
- Compare your reasoning with the saved answer, then revisit the linked lesson if a distinction is unclear.
- Use the spaced-review tool to schedule another attempt; its personal state stays in your browser.
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.