Suitable for use as either an undergraduate or graduate text, depending on the audience, this book covers a wide range of topics, including some that have received increased attention in recent years, such as hard-to-change factors, uniform designs, multiple response optimization, and Analysis of Means (ANOM). Conditional effects are emphasized and advocated for the first time as a routine and important method of analysis. There is a large number of cited references and extensive discussions of software capabilities, with considerable illustrative use of Design-Expert, in particular, JMP, and Minitab.