OpenIntro Statistics By:"David Diez","Christopher Barr","Mine Çetinkaya-Rundel" Published on 2015-07-02 by The OpenIntro project was founded in 2009 to improve the quality and availability of education by producing exceptional books and teaching tools that are free to use and easy to modify. We feature real data whenever possible, and files for the entire textbook are freely available at openintro.org. Visit our website, openintro.org. We provide free videos, statistical software labs, lecture slides, course management tools, and many other helpful resources. This Book was ranked 18 by Google Books for keyword stats.