# Statistics Tutorial

Are you baffled by binomials, puzzled by proportions, dazed by distributions, or just plain stymied by statistics? Stat Trek's free, on-line Statistics and Probability tutorial can help. > Begin lesson 1

This tutorial covers statistics, probability, and survey sampling. It is designed to get you productive as quickly and painlessly as possible.

After completing the tutorial, you will be able to:

• Compute the probability that a particular event will occur.
• Use the right probability distribution (normal, t, binomial, etc.) for your analysis.
• Estimate population means and proportions, based on sample data.
• Determine margin of error and confidence levels.
• Test hypotheses about means and proportions.
• Choose the sample design that yields maximum precision for minimum cost.
• And much more . . .

Topics are introduced in short, easy-to-understand modules. Each lesson covers a single topic, and most lessons include one or more review questions to reinforce learning.

## How to Use This Tutorial

Individual lessons are accessible directly through links in the table of contents, on the left side of the page. If you are already familiar with probability and statistics, you can choose any lesson at random and work effectively.

However, if you are new to statistics, you should work through lessons in the order in which they appear; because each lesson builds on previous lessons.