A practical introduction to statistics that fully incorporates Microsoft Excel as the computational tool for data analysis. Concepts are introduced through real-data based examples with fully worked out solutions. Problems in the exercise sets are graded in level from "Using the Tools" to "Applying the Concepts." Self-test questions appear immediately after important ideas have been introduced to test the student's comprehension of the concepts and to help develop good study habits. Full instruction on using Microsoft Excel is incorporated into the text by means of: a primer on using Windows and Microsoft Excel for the novice, Excel Tutorials with step-by-step instructions and multiple screen shots at the end of each chapter, exercises keyed to data sets contained in Excel Workbooks, and the Prentice Hall Excel add-in disk (packaged free with each copy of the book) that extends the capacity of off-the-shelf Excel and presents many more statistical techniques and procedures through a few simple menus.