Statistics for Business and Economics

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  • Edition: 12th
  • Format: Hardcover
  • Copyright: 12/21/2012
  • Publisher: Pearson

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Statistics for Business and Economics, Twelfth Edition, meets today's business students with a balance of clarity and rigor, and applications incorporated from a diverse range of industries. This classic text covers a wide variety of data collection and analysis techniques with these goals in mind: developing statistical thinking, learning to assess the credibility and value of inferences made from data, and making informed business decisions. The Twelfth Editionhas been updated with real, current datain many of the exercises, examples, and applications. Exercises draw on actual business situations and recent economic events so that students can test their knowledge throughout the course. Statistics in Actioncase studies open each chapter with a recent, controversial, or high-profile business issue, motivating students to critically evaluate the findings and think through the statistical issues involved. A continued emphasis on ethicshighlights the importance of ethical behavior in collecting, interpreting, and reporting on data.

Author Biography

Dr. Jim McClave is currently President and CEO of Info Tech, Inc., a statistical consulting and software development firm with an international clientele. He is an Adjunct Professor of Statistics at the University of Florida, where he was a full-time member of the faculty for 20 years.


P. George Benson is the 21st president of the College of Charleston. Prior to his appointment, he was Dean at the University of Georgia’s C. Herman and Mary Virginia Terry College of Business. His research interests include quality management, strategic management, belief formation, and judgmental forecasting. He consults nationally in the areas of applied statistics, quality management, and employment discrimination.


Terry Sincich obtained his PhD in statistics from the University of Florida in 1980. He is an Associate Professor in the Information Systems & Decision Sciences Department at the University of South Florida in Tampa. Dr. Sincich is responsible for teaching basic statistics to all undergraduates in the College of Business, as well as advanced statistics to all business doctoral candidates. He has published articles in such journals as the Journal of the American Statistical AssociationInternational Journal of ForecastingAcademy of Management Journal, and Auditing: A Journal of Practice & Theory. Dr. Sincich is a co-author of the texts Statistics, A First Course in Statistics, Statistics for Engineering & the Sciences, and A Second Course in Statistics: Regression Analysis.

Table of Contents

1. Statistics, Data, and Statistical Thinking

1.1 The Science of Statistics

1.2 Types of Statistical Applications in Business

1.3 Fundamental Elements of Statistics

1.4 Processes (Optional)

1.5 Types of Data

1.6 Collecting Data: Sampling and Related Issues

1.7 Critical Thinking with Statistics

            Statistics in Action: A 20/20 View of Surveys: Fact or Fiction?

            Activity 1.1: Keep the Change: Collecting Data

            Activity 2.2: Identifying Misleading Statistics

            Using Technology: Accessing and Listing Data; Random Sampling


2. Methods for Describing Sets of Data

2.1 Describing Qualitative Data

2.2 Graphical Methods for Describing Quantitative Data

2.3 Numerical Measures of Central Tendency

2.4 Numerical Measures of Variability

2.5 Using the Mean and Standard Deviation to Describe Data

2.6 Numerical Measures of Relative Standing

2.7 Methods for Detecting Outliers: Box Plots and z-Scores

2.8 Graphing Bivariate Relationships (Optional)

2.9 The Time Series Plot (Optional)

2.10 Distorting the Truth with Descriptive Techniques

            Statistics in Action: Can Money Buy Love?

            Activity 2.1: Real Estate Sales

            Activity 2.2: Keep the Change: Measures of Central Tendency and Variability

            Using Technology: Describing Data

            Making Business Decisions: The Kentucky Milk Case Part 1 (Covers Chapters 1 and 2)


3. Probability

3.1 Events, Sample Spaces, and Probability

3.2 Unions and Intersections

3.3 Complementary Events

3.4 The Additive Rule and Mutually Exclusive Events

3.5 Conditional Probability

3.6 The Multiplicative Rule and Independent Events

3.7 Bayes’s Rule

            Statistics in Action: Lotto Buster!

            Activity 3.1: Exit Polls: Conditional Probability

            Activity 3.2: Keep the Change: Independent Events

            Using Technology: Combinations and Permutations


4. Random Variables and Probability Distributions

4.1 Two Types of Random Variables

PART I: Discrete Random Variables

4.2 Probability Distributions for Discrete Random Variables

4.3 The Binomial Distribution

4.4 Other Discrete Distributions: Poisson and Hypergeometric

PART II: Continuous Random Variables

4.5 Probability Distributions for Continuous Random Variables

4.6 The Normal Distribution

4.7 Descriptive Methods for Assessing Normality

4.8 Other Continuous Distributions: Uniform and Exponential

            Statistics in Action: Probability in a Reverse Cocaine Sting: Was Cocaine Really Sold?

            Activity 4.1: Warehouse Club Memberships: Exploring a Binomial Random Variable

            Activity 4.2: Identifying the Type of Probability Distribution

            Using Technology: Discrete Probabilities, Continuous Probabilities, and Normal Probability Plots


5. Sampling Distributions

5.1 The Concept of a Sampling Distribution

5.2 Properties of Sampling Distributions: Unbiasedness and Minimum Variance

5.3 The Sampling Distribution of the Sample Mean and the Central Limit Theorem

5.4 The Sampling Distribution of the Sample Proportion

            Statistics in Action: The Insomnia Pill: Is It Effective?

            Activity 5.1: Simulating a Sampling Distribution Cell Phone Usage

            Using Technology: Simulating a Sampling Distribution

            Making Business Decisions: The Furniture Fire Case (Covers Chapters 3–5)


6. Inferences Based on a Single Sample: Estimation with Confidence Intervals

6.1 Identifying and Estimating the Target Parameter

6.2 Confidence Interval for a Population Mean: Normal (z) Statistic

6.3 Confidence Interval for a Population Mean: Student’s t-Statistic

6.4 Large-Sample Confidence Interval for a Population Proportion

6.5 Determining the Sample Size

6.6 Finite Population Correction for Simple Random Sampling (Optional)

6.7 Confidence Interval for a Population Variance (Optional)

            Inferences Based on a Single Sample: Estimation with Confidence Intervals

            Statistics in Action: Medicare Fraud Investigations

            Activity 6.1: Conducting a Pilot Study

            Using Technology: Confidence Intervals


7. Inferences Based on a Single Sample: Tests of Hypotheses

7.1 The Elements of a Test of Hypothesis

7.2 Formulating Hypotheses and Setting Up the Rejection Region

7.3 Observed Significance Levels: p-Values

7.4 Test of Hypothesis about a Population Mean: Normal (z) Statistic

7.5 Test of Hypothesis about a Population Mean: Student’s t-Statistic

7.6 Large-Sample Test of Hypothesis about a Population Proportion

7.7 Test of Hypothesis about a Population Variance

7.8 Calculating Type II Error Probabilities: More about b (Optional)

            Statistics in Action: Diary of a Kleenex® User—How Many Tissues in a Box?

            Activity 7.1: Challenging a Company's Claim: Tests of Hypotheses

            Activity 7.2: Keep the Change: Tests of Hypotheses

            Using Technology: Tests of Hypotheses


8. Inferences Based on Two Samples: Confidence Intervals and Tests of Hypotheses

8.1 Identifying the Target Parameter

8.2 Comparing Two Population Means: Independent Sampling

8.3 Comparing Two Population Means: Paired Difference Experiments

8.4 Comparing Two Population Proportions: Independent Sampling

8.5 Determining the Required Sample Size

8.6 Comparing Two Population Variances: Independent Sampling

            Statistics in Action: ZixIt Corp. v. Visa USA Inc.—A Libel Case

            Activity 8.1: Box Office Receipts: Comparing Population Means

            Activity 8.2: Keep the Change: Inferences Based on Two Samples

            Using Technology: Two-Sample Inferences

            Making Business Decisions: The Kentucky Milk Case—Part II (Covers Chapters 6–8)


9. Design of Experiments and Analysis of Variance

9.1 Elements of a Designed Experiment

9.2 The Completely Randomized Design: Single Factor

9.3 Multiple Comparisons of Means

9.4 The Randomized Block Design

9.5 Factorial Experiments: Two Factors

            Statistics in Action: Pollutants at a Housing Development—A Case of Mishandling Small Samples

            Activity 9.1: Designed vs. Observational Experiments

            Using Technology: Analysis of Variance


10. Categorical Data Analysis

10.1 Categorical Data and the Multinomial Experiment

10.2 Testing Category Probabilities: One-Way Table

10.3 Testing Category Probabilities: Two-Way (Contingency) Table

10.4 A Word of Caution about Chi-Square Tests

            Statistics in Action: The Case of the Ghoulish Transplant Tissue—Who Is Responsible for Paying Damages?

            Activity 10.1: Binomial vs. Multinomial Experiments

            Activity 10.2: Contingency Tables

            Using Technology: Chi-Square Analyses

            Making Business Decisions: Discrimination in the Workplace (Covers Chapters 9 and 10)


11. Simple Linear Regression

11.1 Probabilistic Models

11.2 Fitting the Model: The Least Squares Approach

11.3 Model Assumptions

11.4 Assessing the Utility of the Model: Making Inferences about the Slope b 1

11.5 The Coefficients of Correlation and Determination

11.6 Using the Model for Estimation and Prediction

11.7 A Complete Example

            Statistics in Action: Legal Advertising—Does It Pay?

            Activity 11.1: Apply Simple Linear Regression to Your Favorite Data

            Using Technology: Simple Linear Regression


12. Multiple Regression and Model Building

12.1 Multiple Regression Models

PART I: First-Order Models with Quantitative Independent Variables

12.2 Estimating and Making Inferences about the b Parameters

12.3 Evaluating Overall Model Utility

12.4 Using the Model for Estimation and Prediction

PART II: Model Building in Multiple Regression

12.5 Interaction Models

12.6 Quadratic and Other Higher-Order Models

12.7 Qualitative (Dummy) Variable Models

12.8 Models with Both Quantitative and Qualitative Variables

12.9 Comparing Nested Models

12.10 Stepwise Regression

PART III: Multiple Regression Diagnostics

12.11 Residual Analysis: Checking the Regression Assumptions

12.12 Some Pitfalls: Estimability, Multicollinearity, and Extrapolation

            Statistics in Action: Bid Rigging in the Highway Construction Industry

            Activity 12.1: Insurance Premiums: Collecting Data for Several Variables

            Activity 12.2: Collecting Data and Fitting a Multiple Regression Model

            Using Technology: Multiple Regression

            Making Business Decisions: The Condo Sales Case (Covers Chapters 11 and 12)


13. Methods for Quality Improvement: Statistical Process Control (Available on CD)

13.1 Quality, Processes, and Systems

13.2 Statistical Control

13.3 The Logic of Control Charts

13.4 A Control Chart for Monitoring the Mean of a Process: The [x-bar]-Chart

13.5 A Control Chart for Monitoring the Variation of a Process: The R-Chart

13.6 A Control Chart for Monitoring the Proportion of Defectives Generated by a Process: The p-Chart

13.7 Diagnosing the Causes of Variation

13.8 Capability Analysis

            Statistics in Action: Testing Jet Fuel Additive for Safety

            Activity 13.1: Quality Control: Consistency

            Using Technology: Control Charts

            MAKING BUSINESS DECISIONS: The Gasket Manufacturing Case (Covers Chapter 13)


14. Time Series: Descriptive Analyses, Models, and Forecasting (Available on CD)

14.1 Descriptive Analysis: Index Numbers

14.2 Descriptive Analysis: Exponential Smoothing

14.3 Time Series Components

14.4 Forecasting: Exponential Smoothing

14.5 Forecasting Trends: Holt’s Method

14.6 Measuring Forecast Accuracy: MAD and RMSE

14.7 Forecasting Trends: Simple Linear Regression

14.8 Seasonal Regression Models

14.9 Autocorrelation and the Durbin-Watson Test

            Statistics in Action: Forecasting the Monthly Sales of a New Cold Medicine

            Activity 14.1: Time Series

            Using Technology: Forecasting


15. Nonparametric Statistics (Available on CD)

15.1 Introduction: Distribution-Free Tests

15.2 Single Population Inferences

15.3 Comparing Two Populations: Independent Samples

15.4 Comparing Two Populations: Paired Difference Experiment

15.5 Comparing Three or More Populations: Completely Randomized Design

15.6 Comparing Three or More Populations: Randomized Block Design

15.7 Rank Correlation

            Statistics in Action: How Vulnerable Are New Hampshire Wells to Groundwater Contamination?

            Activity 15.1: Keep the Change: Nonparametric Statistics

            Using Technology: Nonparametric Tests

            Making Business Decisions: Detecting “Sales Chasing” (Covers Chapters 10 and 15)



Appendix A: Summation Notation

Appendix B: Basic Counting Rules

Appendix C: Calculation Formulas for Analysis of Variance

            C.1 Formulas for the Calculations in the Completely Randomized Design

            C.2 Formulas for the Calculations in the Randomized Block Design

            C.3 Formulas for the Calculations for a Two-Factor Factorial Experiment

            C.4 Tukey's Multiple Comparisons Procedure (Equal Sample Sizes)

            C.5 Bonferroni Multiple Comparisons Procedure (Pairwise Comparisons)

            C.6 Scheffé's Multiple Comparisons Procedure (Pairwise Comparisons)

Appendix D: Tables

            Table I. Binomial Probabilities

            Table II. Normal Curve Areas

            Table III. Critical Values of t

            Table IV. Critical Values of x 2

            Table V. Percentage Points of the F-Distribution, α = .10

            Table VI. Percentage Points of the F-Distribution, α = .05

            Table VII. Percentage Points of the F-Distribution, α = .025

            Table VIII. Percentage Points of the F-Distribution, α = .01

            Table IX. Control Chart Constants

            Table X. Critical Values for the Durbin-Watson d-Statistic, α = .05

            Table XI. Critical Values for the Durbin-Watson d-Statistic, α = .01

            Table XII. Critical Values of TL and Tu for the Wilcoxon Rank Sum Test: Independent Samples

            Table XIII. Critical Values of T0 in the Wilcoxon Paired Difference Signed Rank Test

            Table XIV. Critical Values of Spearman's Rank Correlation Coefficient

            Table XV. Critical Values of the Studentized Range, α = .05



Answers to Selected Exercises



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