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OpenIntro Statistics 2nd Edition
2012, 426 pages
OpenIntro Statistics 1st Edition
2011, 380 pages

OpenIntro Statistics is a free textbook for introductory statistics. We've spent thousands of hours to make this textbook ready to compete on any stage. The book can be downloaded for free as a PDF or purchased on Amazon.com for $9.94 (get 2-day shipping with a free student trial of Amazon Prime).

Download Second Edition

Click links to download individual chapters, appendices, or the textbook's source files.

Front Material of Book
Chapter 1 Chapter 6
Chapter 2 Chapter 7
Chapter 3 Chapter 8
Chapter 4 Appendices
Chapter 5 Source
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Data Sets

Data sets used in the textbook are included in the zipped file below. Each data set is saved as a tab-delimited text file so it can be easily loaded into any statistical softare. These data sets can also be found in the OpenIntro R packages (openintro, OIdata).

Data Sets
Probability Tables

Normal, t, and chi-square probability distribution tables in a printer-friendly PDF. Or if you'd rather customize the tables, download the LaTeX source.

Printer-friendly PDF Download the LaTeX source files