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Data Analysis, Probability, and Statistics for Teachers Jim Albert Department of Mathematics and Statistics, Bowling Green State University [email protected] This book (to be published by Key College Publishing in late 2006) is a data analysis and probability textbook for prospective and in-service Middle School and High School teachers. The National Council of Teachers in Mathematics (NCTM) has recently established standards in data analysis and probability to be taught to all students from grades K-12. This text is designed to teach the prospective teachers basic concepts in probability and statistics so they have the background to teach the content listed in the NCTM standards. The basic concepts in data analysis and probability will be taught by means of discovery and group interaction on directed activities, both of the hands-on and technology varieties. Technology is implemented by means of the software Fathom, Tinkerplots and the TI 84-Plus graphing calculator. TABLE OF CONTENTS DATA ANALYSIS Topic D1: Statistics, data, and variables TOPICS Statistics and data Reading articles in the media ACTIVITIES ACTIVITY: Getting to know you ACTIVITY: Meet the states data Topic D2: Graphing data TOPICS Graphing categorical data Graphing measurement data Stemplot Histogram Experimenting with different graphs ACTIVITIES ACTIVITY: The shape of the data ACTIVITY: Matching variables and shapes Topic D3: Summaries of data TOPICS Summarizing categorical data Deviations and the mean Comparing the median and the mean Measures of spread The standard deviation Interpreting s: the 68/95/99.7 rule for bell-shaped data www.causeweb.org ACTIVITIES TINKERPLOTS ACTIVITY: Introduction to Tinkerplots INTERNET ACTIVITY: Collecting some data on cities ACTIVITY: Measurement bias ACTIVITY: Matching statistics to graphs 2005 United States Conference on Teaching Statistics (USCOTS) 6 Topic D4: Comparing batches TOPICS Comparison of batches of categorical data Comparison of batches of measurement data ACTIVITIES ACTIVITY: Let us count Topic D5: An Introduction to Relationships TOPICS Different ways of relating two variables Scatterplots ACTIVITIES TINKERPLOTS ACTIVITY: Studying relationships Topic D6: Summarizing Relationships TOPICS Correlation coefficient Least-squares line The median-median line – a robust alternative of fitting a line ACTIVITIES ACTIVITY: Matching correlations with scatterplots FATHOM ACTIVITY: Guessing correlations ACTIVITY: Fitting a line by eye to Galton’s data FATHOM ACTIVITY: Fitting a “best” line FATHOM ACTIVITY: Exploring some Olympics data ACTIVITY: Regression to the mean Topic D7: Relationships between categorical variables TOPICS Describing association in a two-way table ACTIVITIES ACTIVITY: Predictable pairs COLLECTING DATA TOPICS Random sampling Designed experiments ACTIVITIES ACTIVITY: Random rectangles ACTIVITY: Jumping frogs PROBABILITY Topic P1: Probability – a measure of uncertainty TOPICS The classical (equally likely) view of a probability The frequency view of a probability The subjective view of a probability ACTIVITIES ACTIVITY: Tossing and spinning a poker chip ACTIVITY: A calibration experiment Topic P2: Sample space TOPICS Different representations of a sample space Assigning probabilities A more formal look at probability www.causeweb.org ACTIVITIES 2005 United States Conference on Teaching Statistics (USCOTS) 7 Topic P3: Let me count the ways TOPICS Arrangements Combinations Arrangements of non-distinct objects Playing Yahtzee ACTIVITIES ACTIVITY: Mothers and babies ACTIVITY: Sampling from a bag Topic P4: Computing probabilities by simulation TOPICS Simulating a lottery game Basic components of a simulation experiment The collector’s problem ACTIVITIES FATHOM ACTIVITY: Mixed-up letters FATHOM ACTIVITY: Hanging over a gorge FATHOM OR TI-84 PLUS ACTIVITY: The longest run FATHOM OR TI-84 PLUS ACTIVITY: Sampling people from a room FATHOM OR TI-84 PLUS ACTIVITY: The birthday problem Topic P5: Conditional Probability TOPICS Reduced sample space Conditional probability in everyday life Conditional probability in a two-way table Conditional probability and multiplying probabilities ACTIVITIES FATHOM ACTIVITY: Rolling two dice Topic P6: Probability distributions TOPICS Constructing a probability distribution Expected value Standard deviation Empirical rule ACTIVITIES ACTIVITY: Investing money FATHOM ACTIVITY: Throwing two four-sided dice FATHOM ACTIVITY: Constructing a probability distribution by simulation FATHOM ACTIVITY: Playing roulette Topic P7: Coin tossing distributions TOPICS Binomial, Geometric distributions ACTIVITIES ACTIVITY: Coin flipping FATHOM ACTIVITY: A streaky coin Topic P8: Continuous distributions TOPICS The uniform distribution A probability density The probability function (the cdf F(x)) ACTIVITIES FATHOM ACTIVITY: Spinning away FATHOM ACTIVITY: Waiting for the shuttle FATHOM ACTIVITY: A test with a bimodal distribution Summarizing a continuous random variable www.causeweb.org 2005 United States Conference on Teaching Statistics (USCOTS) 8 Topic P9: The Normal distribution TOPICS Computing normal probabilities Percentiles Binomial probabilities and the normal curve Sampling distribution of the mean ACTIVITIES FATHOM ACTIVITY: Sampling heights FATHOM ACTIVITY: Rolling biased dice Topic P10: Introduction to Statistical Inference TOPICS Population, sample, parameter, statistic Sampling distribution of a proportion Estimating with confidence Estimating a population mean Testing hypotheses – p –values ACTIVITIES (Copyright: Key College Publishing) www.causeweb.org 2005 United States Conference on Teaching Statistics (USCOTS) 9