Statistics For Dummies, 2nd Edition
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After data has been collected, the first step in analyzing it is to crunch out some descriptive statistics to get a feeling for the data. For example:

  • Where is the center of the data located?

  • How spread out is the data?

  • How correlated are the data from two variables?

The most common descriptive statistics are in the following table, along with their formulas and a short description of what each one measures.

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About This Article

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About the book author:

Deborah Rumsey, PhD, is an auxiliary faculty member and program specialist in department of statistics at The Ohio State University. An author of several Dummies books, she is a fellow of the American Statistical Association.

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