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A Stata® Companion to Political Analysis
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A Stata® Companion to Political Analysis

Fourth Edition
Additional resources:


January 2019 | 288 pages | CQ Press

“This textbook is a great resource for teaching students how to conduct basic quantitative analysis using Stata. It provides intuitive examples from real data sets. I think it is a great resource for teaching students how to carry their own research projects.”
—Sabri Ciftci, Kansas State University

Popular for its speed, flexibility, and attractive graphics, Stata is a powerful tool for political science students. With Philip Pollock's Fourth Edition of A Stata® Companion to Political Analysis, students quickly learn Stata via step-by-step instruction, more than 50 exercises, customized datasets, annotated screen shots, boxes that highlight Stata's special capabilities, and guidance on using Stata to read raw data. This attractive and value-priced workbook, an ideal complement to Pollock’s Essentials of Political Analysis, is a must-have for any political science student working with Stata.

Give your students the SAGE edge!
SAGE edge offers a robust online environment featuring an impressive array of free tools and resources for review, study, and further exploration, keeping both instructors and students on the cutting edge of teaching and learning. Learn more at edge.sagepub.com/pollock.

 

 
Figures and Tables
 
Preface
 
Introduction: Getting Started
About Companion Datasets

 
 
Chapter 1 Introduction to Stata
Information About a Dataset

 
Information About Variables

 
General Syntax of Stata Commands

 
Do-files

 
Printing Results and Copying Output

 
Log Files

 
Getting Help

 
Customizing Your Display

 
Exercises

 
 
Chapter 2 Descriptive Statistics
Interpreting Measures of Central Tendency and Variation

 
Describing Nominal Variables

 
A CLOSER LOOK: Weighting the GSS and NES Datasets

 
Describing Ordinal Variables

 
Describing Interval Variables

 
Bar Charts for Nominal and Ordinal Variables

 
A CLOSER LOOK: Stata’s Graphics Editor

 
Histograms for Interval Variables

 
Obtaining Case-Level Information With sort and list

 
Exercises

 
 
Chapter 3 Transforming Variables
Creating Indicator Variables

 
Working With Variable Labels

 
Collapsing Variables Into Simplified Categories

 
Centering or Standardizing a Numeric Variable

 
Creating an Additive Index

 
Exercises

 
 
Chapter 4 Making Comparisons
Cross-Tabulation Analysis

 
Visualizing Comparisons With Nominal or Ordinal Dependent Variables

 
A CLOSER LOOK: The replace Command

 
Mean Comparison Analysis

 
A CLOSER LOOK: The format Command

 
Visualizing Comparisons With Interval-Level Dependent Variables

 
Strip Charts: Graphs for Small-N Datasets

 
Exercises

 
 
Chapter 5 Making Controlled Comparisons
Cross-Tabulation Analysis With a Control Variable

 
A CLOSER LOOK: The “If ” Qualifier

 
Visualizing Controlled Comparisons With Categorical Dependent Variables

 
Mean Comparison Analysis With a Control Variable

 
Visualizing Controlled Mean Comparisons

 
Exercises

 
 
Chapter 6 Making Inferences About Sample Means
Finding the 95 Percent Confidence Interval of a Sample Mean

 
Testing a Hypothetical Claim About the Population Mean

 
Testing the Difference Between Two Sample Means

 
A CLOSER LOOK: Inferences About Means With Unweighted Data

 
Extending the mean and lincom Commands to Other Situations

 
Making Inferences About Sample Proportions

 
A CLOSER LOOK: Inferences About Proportions With Unweighted Data

 
Exercises

 
 
Chapter 7 Chi-Square and Measures of Association
Analyzing Ordinal-Level Relationships

 
A CLOSER LOOK: Analyzing Unweighted Data With The tabulate Command

 
Analyzing an Ordinal-Level Relationship With a Control Variable

 
Analyzing Nominal-Level Relationships

 
Exercises

 
 
Chapter 8 Correlation and Linear Regression
Correlation Analysis

 
Regression Analysis

 
A CLOSER LOOK: Treating Census as a Sample

 
A CLOSER LOOK: R-Squared and Adjusted R-Squared: What’s the Difference?

 
Creating a Scatterplot With a Linear Prediction Line

 
Multiple Regression

 
A CLOSER LOOK: Bubble Plots

 
Correlation and Regression Analysis With Weighted Data

 
Exercises

 
 
Chapter 9 Dummy Variables and Interaction Effects
Regression With Multiple Dummy Variables

 
Interaction Effects in Multiple Regression

 
Graphing Linear Prediction Lines for Interaction Relationships

 
Changing the Reference Category

 
Exercises

 
 
Chapter 10 Logistic Regression
Thinking About Odds, Logged Odds, and Probabilities

 
Estimating Logistic Regression Models

 
Logistic Regression With Multiple Independent Variables

 
A CLOSER LOOK: Comparing Logistic Regression Models With the estimates and lrtest Commands

 
Graphing Predicted Probabilities With One Independent Variable

 
Graphing Predicted Probabilities With Multiple Independent Variables

 
Exercises

 
 
Chapter 11 Doing Your Own Political Analysis
Seven Doable Ideas

 
Importing Data Into Stata

 
Writing It Up

 
 
Appendix
Table A-1: Variables in the GSS Dataset in Alphabetical Order

 
Table A-2: Variables in the NES Dataset in Alphabetical Order

 
Table A-3: Variables in the States Dataset by Topic

 
Table A-4: Variables in the World Dataset by Topic

 

“An excellent companion for statistical computing using Stata that is a must-use for those instructors that assign the Pollock text and use Stata in their course."

Donald Gooch
Stephen F. Austin State University

“This textbook is a great resource for teaching students how to conduct basic quantitative analysis using Stata. It provides intuitive examples from real data sets. I think it is a great resource for teaching students how to carry their own research projects.”

Sabri Ciftci
Kansas State University

“This is a great workbook to teach Stata to students who are also learning the basics of statistical analysis. It comes with four datasets that can be used to run analyses. Its exercises are very useful and the instructor tools are great.”

Tijen Demirel-Pegg
Indiana University – Purdue University Indianapolis

“For teaching Stata to undergraduates, this book provides the friendliest approach I have found. Over six straight semesters of teaching the same course, I have found it to make both my teaching experience and the students’ learning experience far more interesting and interactive than a typical “Research Methods” course. It provides exceptional instructional assistance, and presents information to students in an easily digestible way.”

Lilliana Mason, Rutgers
The State University of New Jersey

Preview this book

Sample Materials & Chapters

Chapter 1: Introduction to Stata

Chapter 4: Making Comparisons


For instructors

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