Chapter 3 Slides.ppt - Des Moines Area Community College

Chapter 3

Data Description

McGraw-Hill, Bluman, 7th ed, Chapter 3

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Chapter 3 Overview

Introduction 3-1 Measures of Central Tendency 3-2 Measures of Variation 3-3 Measures of Position 3-4 Exploratory Data Analysis

Bluman, Chapter 3

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Chapter 3 Objectives

1. Summarize data using measures of central tendency.

2. Describe data using measures of variation.

3. Identify the position of a data value in a data set.

4. Use boxplots and five-number summaries to discover various aspects of data.

Bluman, Chapter 3

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Introduction

Traditional Statistics Average Variation Position

Bluman, Chapter 3

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3.1 Measures of Central Tendency

A statistic is a characteristic or measure obtained by using the data values from a sample.

A parameter is a characteristic or measure obtained by using all the data values for a specific population.

Bluman, Chapter 3

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