AP Statistics introduces students to the major concepts and tools for collecting, analysing, and drawing conclusions from data. It emphasises statistical thinking and communication — describing data, designing studies, and making inferences.
Nine units: exploring one-variable data (distributions, summary statistics), two-variable data (scatter plots, regression), collecting data (surveys, experiments, observational studies), probability, random variables, sampling distributions, and inference (confidence intervals and hypothesis tests for proportions, means, and chi-square). The course uses TI-84 calculators extensively.
Section I: 40 MCQs in 1h 30min. Section II: 5 short FRQs + 1 investigative task in 1h 30min. The investigative task (FRQ 6) is worth more and requires integrating multiple concepts. Approximate score of 3+: ~60% of students. Context matters: always interpret results in the context of the problem.
For every inference procedure: (1) State hypotheses clearly (H₀ and Hₐ). (2) Check conditions (random, normal, independent / 10% condition). (3) Calculate the test statistic and p-value. (4) Make a conclusion in context — "We have/do not have convincing evidence that..." Never say "accept H₀" or "prove" — use "fail to reject" and "suggests".
They test very different skills. AP Calculus is more computationally demanding (algebra, limits, derivatives, integrals). AP Statistics requires less computation but more conceptual reasoning and written communication — you must explain your answers in context. Students who are strong writers and enjoy interpreting data often find Stats more natural; students who prefer procedural mathematics may find Calculus more straightforward. Both are one-year courses and earn college credit with a 3+.
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