Statistics Primer: Electronic Statistics TextbookElectronic Statistics Textbook. StatSoft, Inc. (2013). Tulsa, OK: StatSoft.
"The Electronic Statistics Textbook begins with an overview of the relevant elementary (pivotal) concepts and continues with a more in depth exploration of specific areas of statistics, organized by "modules" and accessible by buttons, representing classes of analytic techniques. A glossary of statistical terms and a list of references for further study are included."