Understanding Business Statistics

Contents

1

An Introduction to Statistics

1.1 Statistics Defined

1.2 Branches of Statistics

Descriptive Statistics

Statistical Inference

Probability Theory: The Link

1.3 Two Views of the World

A World of Certainty

A World of Uncertainty

1.4 The Nature of Data

Qualitative and Quantitative Data

Time Series and Cross-Sectional Data

Levels of Measurement

1.5 Data Sources

The Internet

Government Agencies and Private-Sector Companies

Original Studies

1.6 Ethics in Statistics

1.7 The Text

Goals

Key Elements

1.8 A Final Comment

Glossary

Chapter Exercises

2

Descriptive Statistics I: Elementary Data Presentation and Description

2.1 Measures of Central Location or Central Tendency

Mean

Median

Mode

2.2 Measures of Dispersion

Range

Mean Absolute Deviation

Variance

Standard Deviation

2.3 Frequency Distributions

Frequency Distribution Shapes

Computing Descriptive Measures for Frequency Distributions

The Effect of Distribution Shape on Descriptive Measures

2.4 Relative Frequency Distributions

Relative Frequency Bar Charts

Computing Descriptive Measures for Relative Frequency Distributions

2.5 Cumulative Distributions

Cumulative Frequency Distributions

Cumulative Relative Frequency Distribution

2.6 Grouped Data

Histograms

Approximating Descriptive Measures for Grouped Data

A Final Note on Grouped Data

Key Formulas

Glossary

Chapter Exercises

Excel Exercises (Excel 2013)

3

Descriptive Statistics II: ...