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U. Of Wisconsin: Formulating Statistical Questions and Collecting Data
This slideshow gives a detailed explanation of the characteristics of statistical questions and how they differ from other types of questions, the types of studies, and the methods for collecting data. It describes the case of Clever...
Rice University
Rice University: Cynthia Lanius: Let's Graph
An introduction to bar graphs, both vertical and horizontal in nature. The interactive aspect of this site allows students to change the values of the data - their favorite cafeteria foods - and then see how the graph is changed.