Contents

Acknowledgments

Part 1 The Basics

Chapter 1 Getting Started

Introducing This Book

Introducing SAS Software

Summarizing the Structure of SAS Software

Starting SAS

Displaying a Simple Example

Getting Help

Exiting SAS

Introducing Several SAS Statements

Summary

Chapter 2 Creating SAS Data Sets

What Is a SAS Data Set?

Understanding the SAS DATA Step

Creating the Speeding Ticket Data Set

Printing a Data Set

Sorting a Data Set

Summary

Special Topics

Chapter 3 Importing Data

Opening an Existing SAS Data Set

Reading Data from an Existing Text File

Importing Microsoft Excel Spreadsheets

Using the Import Wizard on a PC

Introducing Advanced Features

Summary

Chapter 4 Summarizing Data

Understanding Types of Variables

Summarizing a Continuous Variable

Creating Line Printer Plots for Continuous Variables

Creating Histograms for Continuous Variables

Creating Frequency Tables for All Variables

Creating Bar Charts for All Variables

Checking Data for Errors

Summary

Special Topic: Using ODS to Control Output Tables

Part 2 Statistical Background

Chapter 5 Understanding Fundamental Statistical Concepts

Populations and Samples

The Normal Distribution

Parametric and Nonparametric Statistical Methods

Testing for Normality

Building a Hypothesis Test

Statistical and Practical Significance

Summary

Chapter 6 Estimating the Mean

Using One Number to Estimate the Mean

Effect of Sample Size

Effect of Population Variability

The Distribution of Sample Averages

Getting Confidence Intervals for the Mean

Summary

Part 3 Comparing Groups

Chapter 7 Comparing Paired Groups

Deciding between Independent and Paired Groups

Summarizing Data from Paired Groups

Building Hypothesis Tests to Compare Paired Groups

Performing the Paired-Difference t-test

Performing the Wilcoxon Signed Rank Test

Summary

Chapter 8 Comparing Two Independent Groups

Deciding between Independent and Paired Groups

Summarizing Data

Building Hypothesis Tests to Compare Two Independent Groups

Performing the Two-Sample t-test

Performing the Wilcoxon Rank Sum Test

Summary

Chapter 9 Comparing More Than Two Groups

Summarizing Data from Multiple Groups

Building Hypothesis Tests to Compare More Than Two Groups

Performing a One-Way ANOVA

Analysis of Variance with Unequal Variances

Summarizing PROC ANOVA

Performing a Kruskal-Wallis Test

Understanding Multiple Comparison Procedures

Summarizing with an Example

Summary

Part 4 Fitting Lines to Data

Chapter 10 Understanding Correlation and Regression

Summarizing Multiple Continuous Variables

Calculating Correlation Coefficients

Performing Straight-Line Regression

Fitting a Straight Line with PROC REG

Fitting Curves

Regression for Multiple Independent Variables

Summary

Special Topic: Line Printer Plots

Chapter 11 Performing Basic Regression Diagnostics

Concepts in Plotting Residuals

Creating Residuals Plots for the Kilowatt Data

Creating Residuals Plots for the Engine Data

Looking for Outliers in the Data

Investigating Lack of Fit

Testing the Regression Assumption for Errors

Summary

Special Topic: Creating Diagnostic Plots with Traditional Graphics and Line Printer Plots

Special Topic: Automatic ODS Graphics

Part 5 Data in Summary Tables

Chapter 12 Creating and Analyzing Contingency Tables

Defining Contingency Tables

Summarizing Raw Data in Tables

Creating Contingency Tables from an Existing Summary Table

Creating Contingency Tables for Several Variables

Performing Tests for Independence

Creating Measures of Association with Ordinal Variables

Summarizing Analyses with PROC FREQ

Summary

Special Topic: ODS Graphics

Appendix 1 Further Reading

Appendix 2 Summary of SAS Elements and Chapters

Appendix 3 Introducing the SAS Windowing Environment

Appendix 4 Overview of SAS Enterprise Guide

Index

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