This module introduces students to ways of thinking about and working with data using, as a case study, the analysis of 1.69-oz packages of plain M&Ms. The module is divided into six parts: Part I. Ways to Describe Data Part II. Ways to Visualize Data Part III. Ways to Summarize Data Part IV. Ways to Model Data Part V. Ways to Draw Conclusions From Data Part VI. Now It’s Your Turn! Interspersed within the module’s narrative is a series of investigations, each of which asks students to stop and consider one or more important issues. Many of these investigations draw upon a data set that consists of 30 samples of 1.69-oz packages of plain M&Ms. This case study is meant to serve as an introduction to data and to data analysis and, as with any introduction, it considers a small number of topics; additional resources that provide a deeper introduction to data and to data analysis are listed in Appendix 1 of the case study. Data Set ( Excel , R-File ) Template:HideTOC