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Data Analysis Using SQL and Excel

Data Analysis Using SQL and Excel - Second Edition

By : Gordon S. S. Linoff
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Data Analysis Using SQL and Excel

Data Analysis Using SQL and Excel

By: Gordon S. S. Linoff

Overview of this book

Data Analysis Using SQL and Excel, 2nd Edition shows you how to leverage the two most popular tools for data query and analysis—SQL and Excel—to perform sophisticated data analysis without the need for complex and expensive data mining tools. Written by a leading expert on business data mining, this book shows you how to extract useful business information from relational databases. You'll learn the fundamental techniques before moving into the "where" and "why" of each analysis, and then learn how to design and perform these analyses using SQL and Excel. Examples include SQL and Excel code, and the appendix shows how non-standard constructs are implemented in other major databases, including Oracle and IBM DB2/UDB. The companion website includes datasets and Excel spreadsheets, and the book provides hints, warnings, and technical asides to help you every step of the way. Data Analysis Using SQL and Excel, 2nd Edition shows you how to perform a wide range of sophisticated analyses using these simple tools, sparing you the significant expense of proprietary data mining tools like SAS.
Table of Contents (18 chapters)
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1
Foreword
17
EULA

Geographic Hierarchies

Zip code information has a natural hierarchy: zip codes are in counties, and counties are in states, for instance. Such hierarchies are important for understanding and effectively using geographic information. This section discusses comparisons at different levels of geographic hierarchies.

Wealthiest Zip Code in a State?

Wealth is spread unevenly across the United States. Relative wealth is often more important than absolute wealth, although actual income levels may differ considerably. This inspires a question: What is the wealthiest zip code in each state?

This question is about geographic hierarchies. Locations are simultaneously in multiple geographic areas, so zip codes are in counties and counties are in states. Someone residing in zip code 10011 in Manhattan is also living in New York County, and in New York City, and in New York State, and in the United States. Of course, a handful of zip codes straddle state and county borders, as explained in Chapter...

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Data Analysis Using SQL and Excel
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