Welcome to «Concepts and Applications of Inferential Statistics», which is a free, full-length, and occasionally interactive statistics textbook. It is a companion site of «VassarStats: Web Site for Statistical Computation». The materials on this site may be freely used for any non-commercial educational purpose.

The best web browsers for viewing the materials on this site are Safari and Firefox, both of which are available cost-free for both Windows and Macintosh platforms. Internet Explorer is not recommended, as it provides poor support for modern web formatting standards.