How Much Variation?

2/11/98


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Table of Contents

How Much Variation?

Introduction

Ways to Describe Data

Skewed Left: > 50% Above Mean (Mean < Median < Mode)

Normal Distribution: Mean = Median = Mode

Skewed Right: > 50% Below Mean (Mean > Median > Mode)

Skewness

Variation Also Important

Variance

Standard Deviation

Normal Curve

How can we use standard deviation?

Probability

Probability Distribution

A Measure of Risk

A Little Problem for You . . .

The Solution

Summary

Summary, Continued

Summary, Continued

Summary, Continued

Author: Frederica Shockley