This post will eventually grow to hold a wide list of books on statistics (e-books, pdf books and so on) that are available for free download. But for now we’ll start off with just one several books:

written by Trevor Hastie, Robert Tibshirani and Jerome Friedman. you can legally download a copy of the book in pdf format from the authors website! Direct download (First discovered on the “one R tip a day” blog)**The Elements of Statistical Learning**- Statistics (Probability and Data Analysis) – a wikibook.
**Download link** - Introduction to Statistical Thought by Michael Lavine. The book is organized into seven chapters: “Probability,” “Modes of Inference,” “Regression,” “More Probability,” “Special Distributions,” “More Models,” and “Mathematical Statistics.” and makes extensive use of R. Here is a favoring review the book received in JASA. 328 pages.
**Download link**(approx. 40 mbyte) - Street-Fighting Mathematics by Sanjoy Mahajan.
**Download link** **Download link**(p.s: this book makes no reference to R. see here for R tutorials and functions for performing repeated measures anova)- Collaborative Statistics by Barbara Illowsky and Susan Dean. This textbook is intended for introductory statistics courses. 627 pages. R is not used in this book.
**Download link** by John Verzani Publisher: Chapman & Hall/CRC 2004 ISBN/ASIN: 1584884509 ISBN-13: 9781584884507 Number of pages: 114 Description: The author presents a self-contained treatment of statistical topics and the intricacies of the R software. The book treats exploratory data analysis with more attention than is typical, includes a chapter on simulation, and provides a unified approach to linear models. This text lays the foundation for further study and development in statistics using R.*Using R for Introductory Statistics***Download link**(Three chapters only) by Paul Murrell ISBN: 9781584884866 ISBN 10: 158488486X Publication Date: July 29, 2005 Number of Pages: 328 Description: Chapter 1: An Introduction to R Graphics Chapter 4: Trellis Graphics: The Lattice Package Chapter 5: The Grid Graphics Model*R Graphics***Download link**(see scripts and images here)*Using R***Download link***R intro***Download link**by William Revelle (a work in progress)**Psychometric Theory with Applications in R****Download link**- A great long list of R related texts, for free download, can be found here.
*Using Graphs Instead of Tables***website link**(This web page accompanies the article “Using Graphs Instead of Tables in Political Science”, by Jonathan Kastellec and Eduardo Leoni, which appears in the December 2007 issue of Perspectives on Politics. It contains complete replication code for all the graphs that appear in the text)**IPSUR: Introduction to Probability and Statistics Using R**by G. Jay Kerns, is FREE (in the GNU sense of the word) and comes with a plugin for Rcmdr. 412 pages.**Download link**(first discovered through the Revolution blog)**Multivariate Statistics with R**by Paul J. Hewson. 189 pages.**Download link**(first discovered through open text book blog)**R Programming**– a wikibook. (no PDF version is available as of yet)

Several of these books were discovered through a CrossValidated discussion.

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*Know of any more e-books freely available for download? Please write to us about them in the comments.*