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# AP Exam Strategy Review

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A detailed slide show with practical tips for AP Statistics exam preparation.

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### AP Exam Strategy Review

1. 1. So, you’re about to take the AP Statistics Exam…
2. 2. The MC SectionThere are 40 Multiple Choice questions on the exam – worth 50% of your score• Considering a 50 point possible score for the MC section:• Each MC question is worth 1.25 points• Unanswered questions do not count in the scoring calculation
3. 3. There are two main types of Multiple Choice questions:  Content Questions  Calculation QuestionsConcept Questions These questions DO NOT deal with math. They are designed to test your knowledge of and ability to apply statistical concepts in context based questions. • Answer choices will be verbal • Little or no calculation required to answer • Very little time to answer • Usually about 10-15 questions per examCalculation Questions These questions DO involve math. They are designed to test your ability to use concept knowledge to calculate appropriate answers. • Answer choices will be number based • Knowledge of formulas, tables and/or calculator is required • These take more time to answer • Accounts for the majority of the test
4. 4. A typical concept question might look like this:A simple random sample of size n is taken from a large population whose distribution ofthe variable under consideration is extremely right-skewed. Which of the followingstatements is true? A. As n increases, the sample mean is more likely to be within a given distance of the population mean. B. When n > 30, the distribution of the sample mean is normal. C. As n increases, the sample standard deviation decreases. D. As n increases, the distribution of the sample data becomes more normal. E. The sample standard deviation is equal to population standard deviation n A typical calculation question might look like this: A 95% confidence interval is to be calculated in order to find an estimate for a population proportion. What is the smallest sample size that will guarantee a margin of error of at most 5%? A. 225 B. 350 C. 400 D. 575 E. 800
5. 5. How to increase your MC score:• Use your time wisely. 90 minutes for 40 questions = 2.25/?• Do not work consecutively – do what you know first • This may seem counterintuitive, but if you read the question and are confident about the solution method, go ahead and carry it out. • If a question seems tough and you are unsure about it, keep a list on your work book of the numbers you need to go back to and revisit it when you have exhausted all of the easier questions. • Remember…all MC questions carry the same value. Don’t let yourself run out of time because you spent it all on difficult questions.
6. 6. The FRQ SectionThere are 6 Free Response Questions on the exam – worth 50% of your score:• 5 essay questions •These questions will represent the four main topics of Statistics •Analyzing Data •Producing Data •Probability and Random Variables •Inference •They should take about 12 minutes each •They are worth 75% of Section 2 (37.5% of the entire test)• 1 investigative task •This question will test several concepts and procedures from throughout the course in the context of a single problem. •Should take about 30 minutes •This is worth 25% of Section 2 (12.5% of the entire test)
9. 9. Words from the Chief AP reader (after the 2001 exam):Areas that continue to be problematic are listed below.• Many students failed to read questions carefully and, as a result answered aquestion different from the one that was asked.• Many students did not answer questions in context. Explanations andconclusions in context are always required for a complete answer.• More students than in past years stated assumptions when carrying out ahypothesis test, but few understood that assumptions must also be checked.•A large number of students seem to believe that it is okay to draw conclusionsby "just looking at the data," and did not seem to understand the need toemploy inferential procedures even when asked to provide statistical evidenceto support their conclusions.
10. 10. FRQ Scoring Breakdown4 Complete Response NO statistical errors and clear communication Minor statistical error/omission or fuzzy3 Substantial Response communication Important statistical error/omission or lousy2 Developing Response communication A "glimmer" of statistical knowledge related to1 Minimal Response the problem No glimmer; statistically dangerous to himself0 Inadequate Response and others