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

Normal Distribution Parameters Applet

Go ahead and try the normal distribution applet. This applet will demonstrate the relationship between the mean and the standard deviation. Notice how the curve changes when you change the mean and standard deviation.

Instructions: Move your mouse to move the sliders (left and right) for the mean and the standard deviation to see how they change the shape of the normal distrubution (represented in red) relative to the standrd normal distrubution (represented in blue) with mean one and standard deviation zero.

This applet from Seeing Statistics™ is used under license. Any reproduction or other use is strictly prohibited.