CONTENTS

Table of Contents
Introduction

1. Descriptive Statistics in Evaluation
2. Subgroup Analysis
3. Variable - Are They Related?
4. Correlation
5. The t-Test of Difference Between Means

Supplements
Resources
Glossary

Wading Through the Data Swamp:
Program Evaluation 201

Descriptive Statistics

Let's take the kids' responses to the marijuana and alcohol questions to do some basic descriptive statistics: mean, median, mode, and standard deviation.