This workbook/website combination allows students to analyze and manipulate huge data sets drawn from 1950 through present day, with data from U.S. decennial censuses and the American Community Survey. Each chapter consists of exercises specifically tailored to data sets drawn from this current data. Students gain access to the software and data sets by using passcodes provided with each copy of the text. An important feature new with this edition of the book allows students to conduct their analysis directly on the Web. The Internet-based WebCHIP version of the traditional StudentCHIP software permits students to access datasets and create tables on any computer that has an Internet connection. Moreover, the textbook homepage at http://www.cengage.com/sociology/frey lets the student access all of the data simply and directly. In addition, this site also offers a number of tutorials, references, aids, and analysis tools that will come in handy for you and your students. The new edition will take advantage of the fact that the Census Bureau is now releasing annual data that was previously only available every ten years, based on the American Community Survey (ACS). Exercises and their instructions are updated to reflect the availability of new data and data set labels.