The CD, included in every copy of the text that we sell, contains PHStat 2, developed by David Stephan;  CD-Rom Topics from supplemental textbook chapters; the Springfield Herald Case; Data Files in Minitab, Excel, and SPSS; and Visual Explorations in Statistics (a Microsoft Excel add-in that facilitates learning of introductory statistics by having students explore the effects of changing values on the results produced by four kinds of statistical analyses.)