Rice University
Hyper Stat Online Statistics Textbook
Many people cringe at the idea of studying statistics, but it doesn't have to be impossible! David M. Lane, Associate Professor of Psychology, Statistics, and Management at Rice University, offers a large collection of resources for the...
Missouri State University
Missouri State U.: Introductory Statistics: Concepts, Models, and Applications
This is a comprehensive online text about statistics which covers all the basic concepts.