part 2 exploratory data analysis chapter 3 describing data: numeric descriptive statistics

© Juta and Company Ltd, 2012 1Applied Business Statistics Methods and Excel-Based Applications 3rd Edition

Part 2 Exploratory Data AnalysisChapter 3 Describing Data: Numeric Descriptive Statistics


• Introduction– Location– Dispersion– Skewness

• Central Location Measures– Arithmetic Mean (Average)– Median


• Central Location Measures continued– Mode– Which central location

measure is best?


• Non-central Location Measures– Quartiles– Percentiles


• Measures of Dispersion– Range– Variance


• Measures of Dispersion continued– Standard Deviation– Coefficient of Variation


• Measure of Skewness– Symmetrical Distribution– Positively Skewed Distribution


• Measure of Skewness continued– Negatively Skewed Distribution– Pearson’s Coefficient of Skewness


• The Box Plot


• Choosing Valid Descriptive Statistics Measures• Using Excel (2007) to Compute Descriptive

Statistics– Function Keys– Data Analysis Add-in


• Summary• Exercises


Applied Business Statistics Methods and Excel-based Applications

Third edition

TREVOR WEGNER ISBN 978-0-70217-774-3

End of Chapter 3

part 2 exploratory data analysis chapter 3 describing data: numeric descriptive statistics

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