A unique approach weaves background information about data with practical, hands-on lessons that develop fundamental research skills all students should understand. Easy-to-follow tutorials provide readers with step-by-step instructions to quickly begin analyzing data without having advanced knowledge of data analysis or statistics. Extensive illustrations throughout the book demonstrate to readers how to understand data. End-of-chapter On Your Own exercises challenge readers to develop their skills through easy-to-use data files and questions to reinforce the chapter learning objectives. Student Study Site includes data sets that readers can use to test their data literacy

Data Integrity Checks

As we saw in the last chapter, we can expect to find errors in our data. Our next step is to figure out how extensive those errors are.

To do that, we will run data integrity checks. Data integrity checks sound pretty daunting, but they really are just a way of systematically examining our data for problems. This chapter will demystify that process and show you how you can use Excel to run the checks.

You’re going to learn how to do this using an Excel file that details spending by candidates for the 2012 U.S. Senate race in Texas that was originally downloaded as a comma-separated values (CSV) file from the Federal Election Commission’s data portal ...

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