A New View of Statistics
   An on-line text book of statistics for researchers in biomedical and other empirical sciences.
   http://www.sportsci.org/resource/stats/

Briefbook of Data Analysis
   A condensed handbook in encyclopedic format, covering subjects in statistics, computing, analysis and related fields. In HTML: a printed version is available.
   http://physics.web.cern.ch/Physics/DataAnalysis/BriefBook/

Concepts and Applications of Inferential Statistics
   A full-length and occasionally interactive statistics textbook on the web.
   http://faculty.vassar.edu/~lowry/webtext.html

Current Index to Statistics
   Requires subscription. Free access to records of 'The American Statistician', and records up to 1994.
   http://query.statindex.org/

InterStat
   Open source of articles about statistics. Indexed by date, author, title and keyword. Uses PDF and PS coding.
   http://interstat.statjournals.net/

Medical Statistics at a Glance
   Companion site for the book by Aviva Petrie and Caroline Sabin (Blackwell). MCQs, self-tests, further resources.
   http://www.medstatsaag.com/

Reversibility and Stochastic Networks
   By Frank Kelly, University of Cambridge. Full text of this book now available for download in PDF and DjVu formats.
   http://www.statslab.cam.ac.uk/~frank/rsn.html

Sequential Simplex Optimization
   Electronic reprint of the classical textbook on improving quality and productivity in research, development, and manufacturing.
   http://www.grabitech.com/

SticiGui
   Statistics Tools for Internet and Classroom Instruction with a Graphical User Interface, by Philip B. Stark, University of California, Berkeley. An interactive introductory statistics text with dynamic examples and exercises, applets and glossary.
   http://www.stat.berkeley.edu/~stark/SticiGui

The Statistics Homepage
   This Electronic Statistical Textbook offers training in the understanding and application of statistics.
   http://www.statsoft.com/textbook/stathome.html