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

All Substances Contained in the GPRA Evaluation Instrument

• Alcohol
• Cocaine/crack
• Marijuana/hashish, pot
• Heroin or other opiates
• Non perscription methadone
• Pcp or other hallucinogens/psychedelics, LSD, mushrooms, mescaline
• Benzodiazepines, barbituates, other tranquilers, downers, sedatives or hypnotics
• Inhalants, poppers, rush, whippets
• Methamphetamine or other amphetamines, Uppers