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<>Preface Index of Applications Part I: Exploring and Collecting Data 1. Data and Decisions (E-Commerce) 1.1 What Are Data? 1.2 Variable Types 1.3 Data Sources: Where, How, and When Ethics in Action Technology Help: Data Brief Case: Credit Card Bank 2. Displaying and Describing Categorical Data (KEEN, Inc.) 2.1 Summarizing a Categorical Variable 2.2 Displaying a Categorical Variable 2.3 Exploring Two Categorical Variables: Contingency Tables 2.4 Segmented Bar Charts and Mosaic Plots 2.5 Simpson’s Paradox Ethics in Action Technology Help: Displaying Categorical Data Brief Case: Credit Card Bank 3. Displaying and Describing Quantitative Data (AIG) 3.1 Displaying Quantitative Variables 3.2 Shape 3.3 Center 3.4 Spread of the Distribution 3.5 Shape, Center, and Spread–A Summary 3.6 Standardizing Variables 3.7 Five-Number Summary and Boxplots 3.8 Comparing Groups 3.9 Identifying Outliers 3.10 Time Series Plots *3.11 Transforming Skewed Data Ethics in Action Technology Help: Displaying and Summarizing Quantitative Variables Brief Cases: Detecting the Housing Bubble and Socio-Economic Data on States 4. Correlation and Linear Regression (Amazon.com) 4.1 Looking at Scatterplots 4.2 Assigning Roles to Variables in Scatterplots 4.3 Understanding Correlation 4.4 Lurking Variables and Causation 4.5 The Linear Model 4.6 Correlation and the Line 4.7 Regression to the Mean 4.8 Checking the Model 4.9 Variation in the Model and R2 4.10 Reality Check: Is the Regression Reasonable? 4.11 Nonlinear Relationships Ethics in Action Technology Help: Correlation and Regression Brief Cases: Fuel Efficiency, Cost of Living, and Mutual Funds Case Study I: Paralyzed Veterans of America Part II: Modeling with Probability 5. Randomness and Probability (Credit Reports and the Fair Isaacs Corporation) 5.1 Random Phenomena and Probability 5.2 The Nonexistent Law of Averages 5.3 Different Types of Probability 5.4 Probability Rules 5.5 Joint Probability and Contingency Tables 5.6 Conditional Probability 5.7 Constructing Contingency Tables 5.8 Probability Trees *5.9 Reversing the Conditioning: Bayes’ Rule Ethics in Action Technology Help: Generating Random Numbers Brief Case: Global Markets 6. Random Variables and Probability Models (Metropolitan Life Insurance Company) 6.1 Expected Value of a Random Variable 6.2 Standard Deviation of a Random Variable 6.3 Properties of Expected Values and Variances 6.4 Bernoulli Trials 6.5 Discrete Probability Models Ethics in Action Technology Help: Random Variables and Probability Models Brief Case: Investment Options 7. The Normal and Other Continuous Distributions (The NYSE) 7.1 The Standard Deviation as a Ruler 7.2 The Normal Distribution 7.3 Normal Probability Plots 7.4 The Distribution of Sums of Normals 7.5 The Normal Approximation for the Binomial 7.6 Other Continuous Random Variables Ethics in Action Technology Help: Probability Calculations and Plots Brief Case: Price/Earnings and Stock Value 8. Surveys and Sampling (Roper Polls) 8.1 Three Ideas of Sampling 8.2 Populations and Parameters 8.3 Common Sampling Designs 8.4 The Valid Survey 8.5 How to Sample Badly Ethics in Action Technology Help: Random Sampling Brief Cases: Market Survey Research and The GfK Roper Reports Worldwide Survey 9. Sampling Distributions and Confidence Intervals for Proportions (Marketing Credit Cards: The MBNA Story) 9.1 The Distribution of Sample Proportions 9.2 The Sampling Distribution for Proportions 9.3 A Confidence Interval for a Proportion 9.4 Margin of Error: Certainty vs. Precision 9.5 Choosing the Sample Size Ethics in Action Technology Help: Confidence Intervals for Proportions Brief Cases: Has Gold Lost Its Luster? and Forecasting Demand Case Study II: Real Estate Simulation Part III: Inference for Decision Making 10. Testing Hypotheses about Proportions (Dow Jones Industrial Average) 10.1 Hypotheses 10.2 A Trial as a Hypothesis Test 10.3 P-Values 10.4 The Reasoning of Hypothesis Testing 10.5 Alternative Hypotheses 10.6 Alpha Levels and Significance 10.7 Critical Values 10.8 Confidence Intervals and Hypothesis Tests 10.9 Two Types of Errors 10.10 Power Ethics in Action Technology Help: Hypothesis Tests Brief Cases: Metal Production, Loyalty Program, and Confidence Intervals and Hypothesis Tests 11. Confidence Intervals and Hypothesis Tests for Means (Guinness & Co.) 11.1 The Central Limit Theorem 11.2 The Sampling Distribution of the Mean 11.3 How Sampling Distribution Models Work 11.4 Gosset and the t-Distribution 11.5 A Confidence Interval for Means 11.6 Assumptions and Conditions 11.7 Testing Hypotheses about Means–the One-Sample t-Test Ethics in Action Technology Help: Inference for Means Brief Cases: Real Estate and Donor Profiles 12. Comparing Two Means (Visa Global Organization) 12.1 Comparing Two Means 12.2 The Two-Sample t-Test 12.3 Assumptions and Conditions 12.4 A Confidence Interval for the Difference Between Two Means 12.5 The Pooled t-Test 12.6 Paired Data 12.7 Paired t-Methods Ethics in Action Technology Help: Comparing Two Groups Brief Cases: Real Estate and Consumer Spending Patterns (Data Analysis) 13. Inference for Counts: Chi-Square Tests (SAC Capital) 13.1 Goodness-of-Fit Tests 13.2 Interpreting Chi-Square Values 13.3 Examining the Residuals 13.4 The Chi-Square Test of Homogeneity 13.5 Comparing Two Proportions 13.6 Chi-Square Test of Independence Ethics in Action Technology Help: Chi-Square Brief Cases: Health Insurance and Loyalty Program Case Study III: Investment Strategy Segmentation Part IV Models for Decision Making 14. Inference for Regression (Nambé Mills) 14.1 A Hypothesis Test and Confidence Interval for the Slope 14.2 Assumptions and Conditions 14.3 Standard Errors for Predicted Values 14.4 Using Confidence and Prediction Intervals Ethics in Action Technology Help: Regression Analysis Brief Cases: Frozen Pizza and Global Warming? 15. Multiple Regression (Zillow.com) 15.1 The Multiple Regression Model 15.2 Interpreting Multiple Regression Coefficients 15.3 Assumptions and Conditions for the Multiple Regression Model 15.4 Testing the Multiple Regression Model 15.5 Adjusted R2 and the F-statistic *15.6 The Logistic Regression Model Ethics in Action Technology Help: Regression Analysis Brief Case: Golf Success Part V: Selected Topics in Decision Making 16. Introduction to Data Mining (Paralyzed Veterans of America) 16.1 The Big Data Revolution 16.2 Direct Marketing 16.3 The Goals of Data Mining 16.4 Data Mining Myths 16.5 Successful Data Mining 16.6 Data Mining Problems 16.7 Data Mining Algorithms 16.8 The Data Mining Process 16.9 Summary Ethics in Action Case Study V: Marketing Experiment Appendices A. Answers B. Tables and Selected Formulas C. Photo Acknowledgments Index Table of Contents
Get Business Statistics: A First Course, 3rd Edition by Norean D. Sharpe, Georgetown University Richard D. De Veaux, Williams College Paul F. Velleman, Cornell University
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