John M. Quick is an Educational Technology Ph.D. student at Arizona State University who is interested in the design, research, and use of educational innovations. Currently, his work focuses on mixed-reality systems, interactive media, and innovation adoption. In addition, he has recently published multiple gaming applications for the iPhone and iPad. John's blog, High-Technically Correct, which covers various topics in technology, is available online at http://www.johnmquick.com.
I give thanks to the R Project and its user community for offering the world superior open-source statistical software. I also thank Dr. Roy Levy for introducing me to, and encouraging me to share my knowledge of, R. Lastly, I would like to thank my parents for their lifelong support and Zarraz for the companionship and insights that she offered to me throughout the authoring of this book.