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 Hans the Math Horse to highlight the problem of a questioner unintentionally giving cues to the subject of an experiment. Additional information about types of data and the principles of experimental design are provided as well. Includes many examples.