This *Companion* follows the .pdf version of the third
edition of the *Handbook of Biological Statistics*.

The *Handbook* provides clear explanations and examples
of some the most common statistical tests used in the analysis of experiments.
While the examples are taken from biology, the analyses are applicable to a
variety of fields.

The *Handbook* provides examples primarily with the SAS
statistical package, and with online calculators or spreadsheets for some
analyses. Since SAS is a commercial package that students or researchers may
not have access to, this *Companion* aims to extend the applicability of
the *Handbook* by providing the examples in R, which is a free statistical
package.

The .pdf version of the third edition is available at www.biostathandbook.com/HandbookBioStatThird.pdf.

Also, the *Handbook* can be accessed without cost at www.biostathandbook.com/. However,
the reader should be aware that the online version may be updated since the
third edition of the book.

Or, a printed copy can be purchased from http://www.lulu.com/shop/john-mcdonald/handbook-of-biological-statistics/paperback/product-22063985.html.