Advanced Placement Statistics Syllabus Lynn Ferguson Greenup County High Primary Textbook: Yates, Daniel, Moore, David, and Daren Starnes. The Practice of Statistics, third edition. New York: W.H. Freeman and Company, 2008. Technology: o All students will use a TI-83/TI-83+/TI-84 graphing calculator for all work required. o ALEKS Instructional Modules will be used to reinforce concepts o Study Island will be used for AP exam practice Student Communication Skills: Students will be required to use statistics to evaluate and analyze real-world situations both through textbook problems and practice AP type problems. They will express these results through written expression, oral expression and through technology (project). The following outline contains the course objectives as described by The College Board coupled with the corresponding chapter that covers the objectives. Preliminary Chapter: What Is Statistics? Introduction Data Production: Where Do You Get Good Data? Data Analysis: Making Sense of Data Probability: What are the Chances? Statistical Inference: Drawing Conclusions from Data Statistical Thinking and You HW: Handouts Objective I A: Constructing and interpreting graphical displays of distributions of univariate data (dotplot, stemplot, histogram, cumulative frequency plot): 1. Center and spread 2. Clusters and gaps 3. Outliers and other unusual features 4. Shape Objective I B: Summarizing distributions of univariate data: 1. Measuring center: median, mean 2. Measuring spread: range, interquartile range, standard deviation 3. Measuring position: quartiles, percentiles, standardized scores (z scores) 4. Using boxplots 5. The effect of changing units on summary measures Objective I C: Comparing distributions of univariate data (dotplots, back-to-back stemplots, parallel boxplots) 1. Comparing center and spread: within group, between group variation 2. Comparing clusters and gaps 3. Comparing outliers and other unusual features 4. Comparing shapes Chapter 1: Exploring Data (2.5 Weeks) 1.1 Displaying Distributions with Graphs Variables: Categorical and quantitative Dotplots and histograms Interpreting histograms Outliers Center, Shape and Spread Symmetric and skewed distributions Stemplots Time Plots 1.2 Describing Distributions with Numbers Measuring Center: the mean Measuring Center: the median Comparing the mean and the median Measuring Spread: the quartiles (IQR and outliers) The five-number summary and boxplots (modified boxplots) Measuring Spread: the standard deviation ALEKS Instructional Modules: Objective I A: STAT717: Interpreting Relative Frequency Histograms STAT718: Cumulative Distributions and Ogives STAT702: Histograms for grouped data STAT703: Frequency Polygons for grouped data STAT164: Comparing Means without calculation STAT165: Comparing Standard Deviations without calculation Objective I B: STAT023: Box-and-whisker Plots STAT706: Mean, Median, Mode: Computations STAT007: Weighted Mean: Tabular Data STAT719: Estimating the mean of grouped data STAT021: Population Standard Deviation STAT011: Sample Standard Deviation STAT025: Transforming the mean and standard deviation of a data set Objective I C: STAT831: Interpreting a stem-and-leaf display STAT827: Using back-to-back stem-and-leaf displays to compare data sets STAT798: Mean, median, and mode: Comparisons STAT902: Rejecting unreasonable claims based on average statistics STAT729: Estimating the standard deviation of grouped data HW: 3,4,6,8,11,13,14,15,25,26,29,30,31,32,33,37,39,40,42,43,45,46,56,58,66 Objective I B: Measuring position: standardized scores (z scores) Objective III C: The Normal Distribution: 1. Properties of the normal distribution 2. Using tables of the normal distribution 3. The normal distribution as a model for measurements Chapter 2: The Normal Distributions (2 Weeks) 2.1 Density Curves and the Normal Distributions Density Curves The median and mean of a density curve Normal Distributions (inflection points) The 68-95-99.7 Rule 2.2 Standard Normal Calculations The standard normal distribution Standardized observations Normal distribution calculations The standard normal table Finding normal proportions Finding a value given a proportion Assessing normality (histogram, boxplot, normal probability plot) ALEKS Instructional Modules: Objective I B: STAT760: Standard normal values: basic STAT160: Standard normal values: advanced STAT009: Percentiles Objective III C: STAT730: Empirical Rule STAT157: Standard normal probabilities STAT159: Normal versus standard normal density curves STAT161: Normal distribution raw scores STAT162: Mean and standard deviation of a normal distribution STAT163: Normal distribution: word problems HW: 1,2,3,4,7,8,10,12,13,14,17,19,25,26,31,32,34,35,39,50,51,59,60,61 Objective I D: Exploring bivariate data: 1. Analyzing patterns in scatterplots 2. Correlation and linearity 3. Least-squares regression line 4. Residual plots, outliers, and influential points Chapter 3: Examining Relationships (2.5 Weeks) 3.1 Scatterplots Response variable, explanatory variable Scatterplots Interpreting scatterplots (direction, form, strength) Positive association, negative association Linear relationship Adding categorical variables to scatterplots 3.2 Correlation The correlation r Facts about correlation 3.3 Least-Squares Regression Regression Line Mathematical model The least-squares regression line Equation of the least-squares regression line Facts about least-squares regression Slope of the least-squares regression line Coefficient of Determination Residuals / Residual plots Influential observations and outliers in regression ALEKS Instructional Modules: Objective I D: STAT339: Sketching the least-squares regression line STAT333: Linear relationship and the sample correlation coefficient STAT340: Predictions from the least-squares regression line STAT930: Computing the sample correlation coefficient and the coefficients for the least-squares regression line STAT931: Explained and unexplained variation and the least-squares regression line HW: 1,2,4,5,7,9,13,15,16,17,19,20,21,23,24,29,30,32,35,38,43,44,46,47,50,53,55,60,64,71,81 Objective I D: Exploring bivariate data : 5. Transformations to achieve linearity: logarithmic and power transformations. Objective I E: Exploring Categorical data: 1. Frequency tables and bar charts 2. Marginal and joint frequencies for two-way tables 3. Conditional relative frequencies and association 4. Comparing distributions using bar charts Chapter 4: More on Two-Variable Data (2 Weeks) 4.1 Modeling Nonlinear Data Modeling nonlinear data Exponential and power functions Algebraic properties of logarithms Exponential growth and decay Linear growth and exponential growth Residuals again Power Regression 4.2 Interpreting Correlation and Regression Extrapolation Lurking Variables Using averaged data Association is not causation Causation, common response, confounding Associaton doesn’t imply causation 4.3 Relations in Categorical Data Marginal Distributions Two way tables Describing relationships Simpson’s Paradox HW: 1,5,6,8,9,14,23,24,25,27,29,30,31-35,38,41-45 Objective II A: Overview of methods of data collection: 1. Census 2. Sample Survey 3. Experiment 4. Observational Study Objective II B: Planning and conducting surveys: 1. Characteristics of a well-designed and wellconducted survey 2. Populations, samples, and random selection 3. Sources of bias in sampling and surveys 4. Sampling methods, including simple random sampling, stratified random sampling, and cluster sampling Objective II C: Planning and conducting experiments: 1. Characteristics of a well-designed and wellconducted experiment 2. Treatments, control groups, experimental units, random assignments, and replication 3. Sources of bias and confounding, including placebo effect and blinding 4. Completely randomized design 5. Randomized block design, including matched pairs design Objective II D: Generalizability of results and types of conclusions that can be drawn from observational studies, experiments, and surveys. Chapter 5: Producing Data (3 Weeks) 5.1 Designing Samples Sampling Voluntary Response Sample Experiment Confounding Statistical Inference Population, Sample Sample design Convenience Sampling Bias Simple Random Samples Random Digits Choosing an SRS Probability Sample Stratified Random Sample Multistage Sample Design Cautions about sample surveys Undercoverage and Nonresponse Response Bias Wording of Questions Inference about the population 5.2 Designing Experiments Observational Study –vs- Experiment Experimental Units, Subjects, Treatment, Factor, Level Comparative experiments Placebo effect Control Group Completely Randomized experiments Matching Randomization Completely Randomized design The Logic of Experimental Design Statistical significance Principles of Experimental Design: control, randomization, replication Cautions about experimentation (hidden bias) Double Blind experiment Block design Matched pairs design 5.3 Simulating Experiments Simulation Assigning of digits to represent outcomes Simulate many repetitions Simulations with calculator or computer HW: 1,2,3,5,6,7,8,11,12,13,14,15-18,20,21,24,25,27,28,30,32,34,35,37,38,39,40,41,43,44,45,46, 47,49,5051,52,55,57,58,68 Objective III A: Probability:1. Interpreting probability, including long-run relative frequency interpretation 2. “Law of Large Numbers” concept 3. Addition rule, multiplication rule, conditional probability, and independence. 5. Simulation of random behavior and probability distributions Chapter 6: Probability: The Study of Randomness (2 Weeks) 6.1 Randomness The idea and language of probability Randomness and probability: Random phenomenon Thinking about randomness The uses of probability Independence 6.2 Probability Models Sample Space Tree diagram Multiplication Principle With and without replacement Intuitive probability: event Probability Rules Complement Disjoint Addition Rule Assigning probabilities: finite number of outcomes Assigning probabilities: equally likely outcomes Independence and the Multiplication Rule Applying the probability rules 6.3 More About Probability Rules of Probability: Complement, Addition, Multiplication General Addition Rule: Union and Disjoint sets Venn Diagrams Conditional Probability Joint Probability: General Multiplication Rule Definition of Conditional Probability Intersection Tree Diagrams with several stages Independent Events ALEKS Instructional Modules: Objective III A: STAT119: Venn diagrams: two events STAT101: Venn diagrams: word problems STAT106: Outcomes and event probability STAT226: Die rolling STAT114: Probability of intersection or union: word problems STAT115: Independent events: basic STAT120: Probability of union: basic STAT104: Mutually exclusive events: two events STAT850: Probability of independent events STAT105: Independent events: two events STAT851: Probability of dependent events STAT109: Intersection and conditional probabilities STAT107: Conditional probability: mutually exclusive events STAT108: Conditional probability: independent events STAT756: Tree diagrams for conditional probabilities STAT110: Law of total probabilities STAT113: The curious die HW: 1,3,4,5,8,9,10,12,15,20,22,24,29,30,32,33,39,40,41,44,45,48,50,65,68,69,71,72,74,78, 82,86,87,90,98,99,101 Objective III A: 4 Discrete random variables and their probability distributions 6. Mean (expected value) and standard deviation of a random variable, and linear transformation of a random variable Objective III B: Combining independent random variables: 1. Notion of independence versus dependence 2. Mean and standard deviation for sums and differences of independent random variables Chapter 7: Random Variables (1.5 Weeks) 7.1 Discrete and Continuous Random Variables Random variable Discrete Random variable Probability histogram Continuous random variable Normal distributions as probability distributions 7.2 Means and Variances of Random Variables The mean of a random variable Expected Value Statistical estimation and the law of large numbers The Law of small numbers How large is a large number? Rules for means The variance of a random variable Rules for variances ALEKS Instructional Modules: Objective III A and B: STAT777: Classification of variables and levels of measurement STAT142: Discrete versus continuous variables STAT151: Discrete probability distribution: Basic STAT143: Discrete probability distribution: Word problems STAT149: Cumulative distribution function STAT150: Expectation and variance of a random variable STAT153: Rules for expectation and variance of random variables STAT145: Marginal distributions of two discrete random variables STAT146: Joint distributions of dependent or independent random variables STAT147: Probabilities of two random variables given their joint distribution STAT148: Conditional probabilities of two random variables given their joint distribution HW: 1,2,4,5,14,24,26,32,34,39,41,47,48 Mid Term Exam Chapters 1 - 7 Objective III A: 4 Discrete random variables and their probability distributions, including binomial and geometric Chapter 8: The Binomial and Geometric Distributions (1.5 Weeks) 8.1 The Binomial Distribution The Binomial Setting Binomial Distribution Finding binomial probabilities Cumulative distribution functions Binomial formulas Binomial coefficient Binomial probability Simulating binomial experiments Binomial mean and standard deviation 8.2 The Geometric Distribution The Geometric setting Rules for calculating geometric probabilities Exploring geometric distributions with TI-83 The expected value and other noteworthy properties of the geometric random Variable Probability of more than “n” trials ALEKS Instructional Modules: Objective III A: STAT156: Binomial problems: Mean and standard deviation STAT174: Binomial problems: Basic STAT155: Binomial problems: Advanced STAT187: Normal approximation to binomial HW: 1-5,7,10,12,13,14,15,19,21,22,25,28,31,36,38,42,49,54,58,67 Objective III D: Sampling distribution: 1. Sampling distribution of a sample proportion 2. Sampling distribution of a sample mean 3. Central Limit Theorem 6. Simulation of Sampling Distributions Chapter 9: Sampling Distributions (2 Weeks) 9.1 Sampling Distributions Parameter and Statistic Sampling variability Sampling distribution Describing sampling distributions The bias of a statistic Unbiased statistic The variability of a statistic 9.2 Sample Proportions Population proportion Sample proportion The sampling distribution of p hat Rule of Thumb 1 Rule of Thumb 2 9.3 Sample Means Parameters and statistics The mean and standard deviation of x Sampling distribution of a sample mean Central Limit Theorem The Law of Large Numbers revisited ALEKS Instructional Modules: Objective III D: STAT185: Central Limit Theorem: Sample mean STAT186: Central Limit Theorem: Sample sum STAT188: Central Limit Theorem: Sample proportion HW: 1,2,3,5,8,11,17,19,20,22,25,26,29,30,32,34,37,38,41,42,50,54 Objective IV: A: Estimation (point estimators and confidence intervals): 1. Estimating population parameters and margins of error 2. Properties of point estimators, including unbiasedness and variability 3. Logic of confidence intervals, meaning of confidence level and confidence intervals, and properties of confidence intervals Objective IV: B: Tests of significance: 1. Logic of significance testing, null and alternative hypothesis; p-values; one- and two-sided tests; concepts of Type I and TypeII errors; concept of power. 4. Test for a mean Chapter 10: Introduction to Inference (3 Weeks) 10.1 Estimating with Confidence Statistical Confidence Confidence Interval Margin of error Confidence Level Critical values Confidence Interval for a population mean How confidence intervals behave Choosing the sample size for desired margin of error Some cautions 10.2 Estimating a Population Mean Conditions for Inference about a Population Mean Standard Error The t Distributions Degrees of freedom One-sample t confidence interval Paired t procedures Robustness of t procedures 10.3 Estimating a Population Proportion Conditions for inference about a proportion A confidence interval for a population proportion Putting it all together: The inference toolbox Choosing the sample size ALEKS Instructional Modules: Objective IV A and B: STAT173: t distribution STAT200: Selecting a distribution for inferences on the population mean STAT201: Confidence interval for the population mean: use of the standard normal STAT755: Choosing an appropriate sample size STAT202: Confidence interval for the population mean: use of the t distribution STAT203: Confidence interval for a population proportion HW: 1,2,3,9,10,12,13,14,15,16,22,23,27,31,34,35,36,38,41,45,46,51,54,62,68 Objective III D: Sampling Distributions: 4. Sampling distribution of a difference between two independent sample means 7. t-distribution Objective IV A: Estimation: 7. Confidence interval for a difference between two means Objective IV B: Tests of Significance: 5. Test for a difference between two means Chapter 11: Testing a Claim (2 Weeks) 11.1 Significance Tests: The Basics Stating the null and alternative hypotheses Conditions for significance tests Test statistics P-values Statistical significance Interpreting Results in Context 11.2 Carrying Out Significance Tests Z test for a population mean Tests from confidence intervals Confidence intervals and two-sided tests 11.3 Use and Abuse of Tests Choosing a level of significance Statistical significance and practical importance Don’t ignore lack of significance Statistical inference is not valid for all sets of data Beware of multiple analyses 11.4 Using Inference to Make Decisions Type I and Type II Errors Error probabilities Significance and Type I error Power and Type II error Increasing the power ALEKS Instructional Modules: Objective IV B: STAT300: Determining null and alternative hypothesis STAT301: Hypothesis test for the population mean: Z test STAT190: Type I and Type II errors STAT192: Type I and Type II errors and power STAT194: Effect size, sample size, and power HW: 1,2,3,4,6,7,8,9,10,14,15,20,25,26,28,30,31,32,36,37,38,43,44,45,47,48,49,50,53,55,64 Objective III D: Sampling Distributions: 4: Sampling distribution of a difference between two independent sample proportions Objective IV A: Estimation: 4. Large sample confidence interval for a proportion 5. Large sample confidence interval for a difference between two proportions Objective IV B: Tests of Significance: 2. Large sample test for a proportion 3. Large sample test for a difference between two proportions Chapter 12: Significance Tests in Practice (2 Weeks) 12.1 Tests About a Population Mean The one-sample t statistic and the t distribution Determining p values The one-sample t test More about the one-sample t test: robustness and power 12.2 Tests About a Population Proportion The one-proportion z test Confidence intervals provide additional information ALEKS Instructional Modules: Objective IV B: STAT302: Hypothesis test for the population mean: t test STAT303: Hypothesis test for a population proportion HW: 3,4,5,9,10,16,19,23,24,26,30,31,34,35 Chapter 13 Comparing Two Population Parameters (1 Week) 13.1 Comparing Two Means Conditions for comparing two means The two-sample z statistic The two-sample t procedures Robustness again 13.2 Comparing Two Proportions Two-sample problems: proportions The sampling distribution of p1 – p2 Confidence interval for comparing two proportions Significance tests for p1 – p2 Significance test for comparing two proportions ALEKS Instructional Modules: Objective IV A and B: STAT305: Hypothesis test for the difference of population means: Z test STAT309: Hypothesis test for the difference of population means: paired comparisons STAT306: Hypothesis test for the difference of population means: t test STAT307: Hypothesis test for the difference of population proportions STAT205: Confidence interval for the difference of population means: Use of the standard normal STAT206: Confidence interval for the difference of population means: Use of the t distribution STAT207: Confidence interval for the difference of population proportions HW: 1,2,3,5,7,8,13,14,16,18,19,23,24,26,27,29,30,33,34,38,39,44 Objective III D: Sampling Distributions: 8. Chi-Square Distribution Objective IV B: Tests of Significance: 6. Chi-Square test for goodness of fit, homogeneity of proportions, and independence(one- and two-way tables) Chapter 14: Inference for Distributions of Categorical Variables: ChiSquare Procedures (1 Week) 14.1 Test for Goodness of Fit Chi square One-way table Expected count The Chi-Square goodness of fit test Properties of the Chi-Square distributions 14.2 Inference for Two-Way Tables Conditional distributions The problem of multiple comparisons Two-way tables Stating Hypotheses Computing Expected Cell Counts The X2 test for homogeneity of populations The X2 statistic and its p-value The X2 test of association/independence ALEKS Instructional Modules: Objective IV B: STAT320: Chi-square goodness-of-fit test STAT321: Chi-square test of independence STAT319: Contingency tables: Expected frequencies HW: 3,8,10,11,18,22,23,28,35,36,41 Objective IV A: Estimation: 8. Confidence interval for the slope of a least squares regression line Objective IV B: Tests of Significance: 7. Test for the slope of a least squares regression line Chapter 15: Inference for Regression (1 Week) The regression model Conditions for the regression model Checking the regression conditions Estimating the parameters Confidence intervals for the regression slope Testing the hypothesis of no linear relationship ALEKS Instructional Modules: Objective IV A and B: STAT947: Hypothesis test for the correlation coefficient and the slope of the Least-squares regression line STAT325: Confidence intervals and prediction intervals from simple linear regression HW: 2,4,5,6,8,12,13,26 Practice Final Exam Chapters 1 – 15 2nd Semester Project: After the AP exam is completed, students will design their own hypothesis test. They will determine the null and alternative hypothesis, decide the sampling method and perform the experiment. Examples of types of questions the students can ask: Is gender independent of choice of color of M & M? Does a bag of skittles match the proportion of colors that are supposed to be in the bag? Is gender related to horsepower and model of a car? Is age related to Piaget type questions? (which glass is more full? Which line is longer?) Are the ACT scores of the senior class higher than the state average? Students will submit a design for approval, as well as the method of data collection. A written analysis, including the positive and negatives of the project, will also be required. Students will also submit an imovie , power point presentation, or a podcast displaying the results in a graphical manner.