AP Statistics

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1Unit 1: Exploring One-Variable Data131 cards · AP Statistics Unit 1 (15–23% of the exam): variables, graphs, describing distributions, summary statistics, boxplots, comparing distributions, and the normal distribution.2Unit 2: Exploring Two-Variable Data48 cards · AP Statistics Unit 2 (5–7% of the exam): two-way tables, scatterplots, correlation, least-squares regression, residuals, and departures from linearity.3Unit 3: Collecting Data91 cards · AP Statistics Unit 3 (12–15% of the exam): sampling methods, sources of bias, observational studies, experimental design, and scope of inference.4Unit 4: Probability, Random Variables, and Probability Distributions98 cards · AP Statistics Unit 4 (10–20% of the exam): simulation, probability rules, conditional probability, independence, random variables, and the binomial and geometric distributions.5Unit 5: Sampling Distributions66 cards · AP Statistics Unit 5 (7–12% of the exam): the central limit theorem, bias and variability, and sampling distributions of proportions, means, and differences.6Unit 6: Inference for Categorical Data: Proportions86 cards · AP Statistics Unit 6 (12–15% of the exam): confidence intervals and significance tests for one and two proportions, p-values, and Type I and Type II errors.7Unit 7: Inference for Quantitative Data: Means92 cards · AP Statistics Unit 7 (10–18% of the exam): t distributions, confidence intervals and tests for one mean, paired data, and two means.8Unit 8: Inference for Categorical Data: Chi-Square38 cards · AP Statistics Unit 8 (2–5% of the exam): expected counts and chi-square tests for goodness of fit, homogeneity, and independence.9Unit 9: Inference for Quantitative Data: Slopes33 cards · AP Statistics Unit 9 (2–5% of the exam): sampling variability of slopes and confidence intervals and significance tests for a regression slope.
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Flashcards for AP Statistics, organized by the nine units of the College Board AP Statistics Course and Exam Description, from exploring data through inference for slopes. 683 cards in 9 decks, including worked problems on z-scores, probability, sampling distributions, confidence intervals and significance tests. Built from publicly available sources such as the AP Statistics Course and Exam Description, MIT OpenCourseWare 18.05, and OpenStax Introductory Statistics 2e. Check details against official College Board materials; flashcards are a memory-retention tool, not a replacement for the course.