The goal of this project is to provide free, high quality, interactive, web-based resources for students and teachers of probability and statistics. Basically, our project consists of an integrated set of components that includes expository text, applets, data sets, biographical sketches, and an object library. Please read the Introduction for more information about the content, structure, mathematical prerequisites, and organization of the project. Technologies and Browser Requirements This site uses a number of advanced (but open and standard) technologies, including the Mathematics Markup Language (MathML), for portable and notationally correct mathematical expressions, and Java for the applets. See the Introduction for more information about the technologies used.