POMPTON LAKES PUBLIC SCHOOLS ADVANCED PLACEMENT STATISTICS COURSE OF STUDY Submitted By The Mathematic Department Dr. Paul Amoroso, Superintendent Mr. Vincent Przybylinski, Principal Mr. Anthony Mattera, Vice Principal Frances J. Macdonald, Mathematics Supervisor K-12 BOARD MEMBERS Mr. Jose A. Arroyo, Mrs. Catherine Brolsma, Mr. Shawn Dougherty, Mrs. Nancy Lohse-Schwartz, Mr. Garry Luciani, Mr. Carl Padula, Mr. Tom Salus, Mrs. Stephanie Shaw, Mr. Timothy Troast, Jr. AP Statistics I. 2 RATIONALE This year long course in Statistics is not only a college preparatory course, but also a course that could earn college credit dependent on future college attendance. II. DESCRIPTION This year long course, Advanced Placement (AP) Statistics, offers a course description and examination in statistics to students who wish to complete studies in secondary school equivalent to a one-semester, introductory, non-calculus based, and college course in statistics. In colleges and universities, the number of students who take a statistics course is almost as large as the number of students who take a calculus course. At least one statistics course is typically required for majors such as engineering, psychology, sociology, health sciences and business. The purpose of the AP course in statistics is to introduce students to the major concepts and tools for collecting, analyzing and drawing conclusions from data. Students are exposed to four broad conceptual themes: 1. Exploring Data: Observing patterns and departures from patterns 2. Planning a Study: Deciding what and how to measure 3. Anticipating Patterns: Producing models using probability and simulation 4. Statistical Inference: Confirming models Students who successfully complete the course and examination may receive credit and/or advanced placement for a one-semester introductory college statistics course. The AP Statistics course is an excellent option for any student who has successfully completed a second-year course in Algebra, regardless of the student=s intended college major. Much of the content of an introductory statistics course does not require any symbolic manipulation beyond the level of first-year Algebra; however, most students who have studied only first-year algebra do not possess sufficient mathematical maturity and quantitative reasoning ability to complete an introductory statistics course successfully. Consequently, Algebra II is the prerequisite course. III. THE CORE CURRICULUM CONTENT STANDARDS 4.1 4.2 4.3 4.4 All students will develop the ability to pose and solve mathematical problems in mathematics, other disciplines, and everyday experiences. All students will communicate mathematically through written, oral, symbolic, and visual forms of expression. All students will connect mathematics to other learning by understanding the interrelationships of mathematical ideas and the roles that mathematics and mathematical modeling play in other disciplines and in life. All students will develop reasoning ability and will become self- A.P. Statistics 3 reliant, independent mathematical thinkers. All students will regularly and routinely use calculators, computers, manipulatives and other tools to enhance mathematical thinking, understanding and power. 4.6 All students will develop number sense and an ability to represent numbers in a variety of forms and use numbers in diverse situations. 4.7 All students will develop spatial sense and an ability to represent geometric properties and relationships to solve problems in mathematics and in everyday life. 4.8 All students will understand, select, and apply various methods of performing numerical operations. 4.9 All students will develop an understanding of and will use measurement to describe and analyze phenomena. 4.10 All students will use a variety of estimation strategies and recognize situations in which estimation is appropriate. 4.11 All students will develop an understanding of patterns, relationships, and functions and will use them to represent and explain real world phenomena. 4.12 All students will develop an understanding of statistics and probability and will use them to describe sets of data, model situations, and support appropriate inferences and arguments. 4.13 All students will develop algebraic concepts and processes and will use them to represent and analyze relationships among variable quantities and to solve problems. 4.14 All students will apply the concepts and methods of discrete mathematics to model and explore a variety of practical situations. 4.15 All students will develop an understanding of the conceptual building blocks of calculus and will use them to model and analyze natural phenomena. 4.16 All students will demonstrate high levels of mathematical thought through experiences which extend beyond traditional computation, algebra, and geometry. 4.5 IV. STANDARD 9.1 (Career and Technical Education) All students will develop career awareness and planning, employment skills, and foundational knowledge necessary for success in the workplace. Strands and Cumulative Progress Indicators Building knowledge and skills gained in preceding grades, by the end of Grade 12, students will: A. Career Awareness/Preparation 1. Re-evaluate personal interests, ability, and skills through various measures including self assessments. 2. Evaluate academic and career skills needed in various career clusters. A.P. Statistics 3. 4. 5. B. 4 Analyze factors that can impact an individual’s career Review and update their career plan and include plan in portfolio. Research current advances in technology that apply to a sector occupational career cluster. Employment skills 1. Assess personal qualities that are needed to obtain and retain a job related to career clusters. 2. Communicate and comprehend written and verbal thoughts, ideas, directions and information relative educational and occupational settings. 3. Select and utilize appropriate technology in the design and implementation of teacher-approved projects relevant to occupational and /or higher educational settings 4. Evaluate the following academic and career skills as they relate to home, school, community, and employment. Communication Punctuality Time management Organization Decision making Goal setting Resources allocation Fair and equitable competition Safety Employment application Teamwork 5. Demonstrate teamwork and leadership skills that include student participation in real world applications of career and technical educational skills. All students electing further study in career and technical education will also: participate in a structural learning experience that demonstrates interpersonal communication, teamwork, and leadership skills. V. UNITS A EXPLORING DATA: OBSERVING PATTERNS AND DEPARTURE FROM PATTERNS TIME LINE 10 days CCCS 4.1,4.2,4.3,4.4,4.5,4.6,4.8,4.10,4.11,4.12,4.13,4.14 1. Objectives a. Interpret graphical displays of distributions of univariate data b. Summarize distributions of univariate data c. Compare distributions of univariate data A.P. Statistics 2. 3. 5 d. Explore bivariate data e. Examine categorical data using frequency tables Content a. Dot-plot, stem-plot, box-plot, histograms and cumulative frequency plot. b. Center and spread of data c. Clusters and gaps in data d. Outlines e. Shape f. Measures of center: median, mean g. Measures of spread: range, inter-quartile range, standard deviation h. Effects of changing units on summary measures i. Patterns in scatter-plots j. Correlation and linearity k. Least squares regression line I. Residual plots m. Logarithmic and power transformations n. Marginal and joint frequencies for two-way tables o. Conditional relative frequencies Assessments 1. Consider the following murder rates (per 100,000 people). AL AK AZ AR CA CO CT DE FL GA HI ID IL 13.3 12.9 9.4 9.1 11.7 7.3 4.2 6.7 11.0 14.4 6.7 5.4 9.9 IN IA KS SY LA ME MD MA MI MN MS MO MT 6.2 2.6 5.7 8.9 15.8 2.7 8.2 3.7 10.6 2.0 12.6 10.4 4.8 NE NV NH NM NY NC ND OH OK OR PA RI 2.9 15.5 1.4 10.2 10.3 10.8 1.2 6.9 8.5 5.0 6.2 SC SD TN TX UT VT VA WA WV WI WY 11.5 1.9 9.4 14.2 3.7 3.3 8.8 4.6 6.8 2.5 7.1 What does a histogram show about the shape of this distribution? A.P. Statistics 2. 6 According to the 1992 NAEP Trial State Assessment the average mathematics proficiency scores in eighth grade for 41 states were as follows: AL AZ AR CA CO CT DE FL GA HI ID 251 265 255 260 272 273 262 259 259 257 274 IN IA KY LA ME MD MA MI MN MS 269 283 261 249 278 264 272 267 282 246 MO NE NH NJ NM NY NC ND OH OK 270 277 278 271 259 266 258 283 267 267 PA RI SC TN TX UT VA WV WI WY 271 265 260 258 264 274 267 258 277 274 What does a stem-plot show about the shape of this distribution? 3. According to a 1988 New York Time article, the ten car models with the highest theft rates were as follows: Vehicle Model Pontiac Firebird Chevrolet Camaro Chevrolet Monte Carlo Toyota MR2 Buick Regal Mitsubishi Starion Ferrari Mondial Mitsubishi Mirage Pontiac Fiero Oldsmobile Cutlass Thefts per 1000 cars 30.14 26.02 20.28 19.25 14.70 14.70 13.60 12.80 12.68 11.73 What are the mean, range, and standard deviation of these theft rates? Explain how each of these values changes if each theft rate increases by 1.5 and if each increases by 15%. B. PLANNING A STUDY: DECIDING WHAT AND HOW TO MEASURE TIME LINE 8 days CCCS 4.1,4.2,4.3,4.4,4.5,4.6,4.8,4.10,4.11,4.12,4.13,4.14 1. Objects a. Distinguish various methods of data collections b. Plan and conduct surveys A.P. Statistics 2. 3. 7 c. Plan and conduct experiments Content a. Census b. Sample survey c. Experiment d. Observational study e. Random sampling f. Sampling error g. Bias in surveys h. Stratifying to reduce variations i. Experiments versus observational studies versus surveys: ie treatments j. Confounding, control groups, placebo effects, blinding k. Randomized paired comparison design: Block design including matched pairs design l. Replication, blocking and generalization of results m. Generalization of results and types of conclusions which can be drawn from observational studies, experiments and surveys. Assessment 1. A questionnaire is being designed to determine whether most people are or are not in favor of legislation protecting the habitat of the spotted owl. Give two examples of poorly worded questions, one biased toward each response. 2. To obtain a sample of 25 students from among the 500 students present in school one day, a surveyor decides to pick every twentieth student waiting on line to attend a required assembly in the gym. a) Explain why this procedure will not result in a simple random sample of the students present that day. b) Describe a procedure that will result in a simple random sample of the students present that day. C. ANTICIPATING PATTERNS: PRODUCING MODELS USING PROBABILITY AND SIMULATION TIME LINE 12 days CCCS 4.1,4.2,4.3,4.4,4.5,4.6,4.8,4.10,4.11,4.12,4.13,4.14 1. Objectives: a. Understand probability as relative frequency b. Combine independent random variables c. Use the normal distribution as a model for measurements d. Work with the properties of the normal distribution: ie: Addition rule: multiplication rule; conditional probability; A.P. Statistics 2. 3. 8 independence e. Simulate sampling distribution Content a. Notion of independent versus dependence b. Mean and standard deviation for sums and differences of independent random variables c. Properties of the normal distribution d. Tables of the normal distribution e. The normal distribution as a model for measurement f. Sampling distribution of a sample proportion g. Sampling distribution of a sample mean h. Central limit theorem i. Sampling distribution of a difference between two independent sample proportions j. Sampling distribution of a difference between two independent sample means k. Simulation of sampling distribution l. “Law of Large Numbers” concept m. Discrete random variables and their probability distribution, including binomial and geometric. n. Simulations of random behavior and probability distributions. o. Mean (expected value) and standard deviation of a random variable. p. Linear transformations of a random variable q. Notion of independence versus dependence. r. Mean and Standard deviation for sums and differences of independent random variables. Assessment 1. Suppose you will be taking exams in English, statistics, and chemistry tomorrow, and from past experience you know that for each exam you have a 50% chance of receiving an A. List all eight possibilities for receiving A’s on the various exams. Letting X represent the number of A’s you will receive, show the distribution of X, that is, the values and associated probabilities. 2. A sample of applicants for a management position yields the following numbers with regard to age and experience: Years of experience 0-5 6-10 >10 Less than 50 years old 80 125 20 More than 50 years old 10 75 50 A.P. Statistics 9 a) What is the probability that an applicant is less than 50 years old? Has more than 10 years’ experience? Is more than 50 years old and has five or fewer years’ experience? b) What is the probability that an applicant is less than 50 years old given that she has between 6 and 10 years experience? c) Are the two events “less than 50 years old” and “more than 10 years’ experience” independent events? How about the two events “more than 50 years old” and “between 6 and 10 years’ experience”? Explain. D. STATISTICAL INFERENCE: CONFIRMING MODELS TIME LINE 10 days CCCS 4.1,4.2,4.3,4.4,4.5,4.6,4.8,4.10,4.11,4.12,4.13,4.14 1. Objectives a. Use statistical inference to select appropriate models b. Establish confidence intervals c. Work with a variety of Tests of Significance d. Identify special cases of normally distributed data 2. Content: a. Meaning of Confidence interval; estimating population parameters and margins of error. b. Confidence interval for a proportion c. Confidence interval for a mean d. Confidence interval for a difference between two proportions or two means e. Logic of Significance testing: Type I and Type II errors f. Null and alternative hypotheses g. P-values; concept of power h. One- and two-sided tests i. Large sample tests for a proportion, a mean, and the difference between two proportions or two means j. Chi-square tests for goodness of fit, homogeneity of proportions and independence; Chi-square distribution k. T-distributions l. T-procedures: single sample; two sample m. Test for the slope of a least-square regression line. n. Properties of point estimators, including unbiased ness and variability. o. Point estimators 3. Assessment 1. Suppose that the heights of college basketball players are normally distributed with a mean of 74 inches and a standard deviation of 4 inches. a) What percentage of players are over 7 feet? A.P. Statistics b) c) d) 10 What is the probability that at least one of ten randomly selected players is over 7 feet? What is the probability that the mean height in an SRS of size 10 is over 6 feet? If an outlier is defined to be any value more than 1.5 interquartile ranges above the third quartile or below the first quartile, what percentage of heights of players are outliers? 2. The mathematics department at a state university notes that the SAT math scores of high school seniors applying for admission into their program are normally distributed with a mean of 610 and standard deviation of 50. a) What is the probability that a randomly chosen applicant to the department has an SAT math score above 700? What is the shape, mean, and standard deviation of the sampling distribution of the mean of a sample of 40 randomly selected applicants? What is the probability that the mean SAT math score in an SRA of 40 applicants is above 625? Would your answers to (a), (b), or (c) be affected if the original population of SAT math scores were highly skewed instead of normal? Explain. b) c) d) VI. EVALUATIONS A. Tests B. Quizzes C. Project/Research D. Homework E. Class participation F. Assessments which require students to use calculator functions appropriate to statistics G. Semester Exams VII. BENCHMARKS A. (Semester I Exam) 1. Dot-plot, stem-plot, box-plot, histograms and cumulative frequency plot. 2. Center and spread of data 3. Clusters and gaps in data 4. Outlines 5. Shape 6. Measures of center: median, mean 7. Measures of spread: range, inter-quartile range, standard deviation A.P. Statistics 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. B. 11 Effects of changing units on summary measures Patterns in scatter-plots Correlation and linearity Least squares regression line Residual plots Logarithmic and power transformations Marginal and joint frequencies for two-way tables Conditional relative frequencies Census Sample survey Experiment Observational study Random sampling Sampling error Bias in surveys Stratifying to reduce variations Experiments versus observational studies versus surveys: ie treatments Confounding, control groups, placebo effects, blinding Randomized paired comparison design: Block design including matched pairs design Replication, blocking and generalization of results Generalization of results and types of conclusions which can be drawn from observational studies, experiments and surveys. (Semester II Exam) 1. Notion of independent versus dependence 2. Mean and standard deviation for sums and differences of independent random variables 3. Properties of the normal distribution 4. Tables of the normal distribution 5. The normal distribution as a model for measurement 6 Sampling distribution of a sample proportion 7. Sampling distribution of a sample mean 8. Central Limit Theorem 9. Sampling distribution of a difference between two independent sample proportions 10. Sampling distribution of a difference between two independent sample means 11. Simulation of sampling distribution 12. “Law of Large Numbers” concept 13. Discrete random variables and their probability distribution, including binomial and geometric. 14. Simulations of random behavior and probability distributions. A.P. Statistics 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30 31. 32. 33. VIII. 12 Mean (expected value) and standard deviation of a random variable. Linear transformations of a random variable Notion of independence versus dependence. Mean and Standard deviation for sums and differences of independent random variables. Meaning of Confidence interval; estimating population parameters and margins of error. Confidence interval for a proportion Confidence interval for a mean Confidence interval for a difference between two proportions or two means Logic of Significance testing: Type I and Type II errors Null and alternative hypotheses P-values; concept of power One- and two-sided tests Large sample tests for a proportion, a mean, and the difference between two proportions or two means Chi-square tests for goodness of fit, homogeneity of proportions and independence; Chi-square distribution T-distributions T-procedures: single sample; two sample Test for the slope of a least-square regression line. Properties of point estimators, including unbiased ness and variability. Point estimators AFFIRMATIVE ACTION A-1 minorities and females incorporated in the plans A-2 human relations concepts being taught A-3 teaching plans to change ethnic and racial stereotypes IX. BIBLIOGRAPHY Moore, D., The Basic Practice of Statistics ,W. H. Freeman, New York, NY 1994 Moore, D. and McCabe, G., Introduction to the Practice of Statistics, Second Edition, W. H. Freeman, New York, NY 1993 Rossman, A., Workshop Statistics, Springer-Verlag, New York, NY 1995 Siegel, A. Morgan, Statistics and Data Analysis, C. Second Edition, John Wiley & Sons, New York, NY 1996