About the Author A leading textbook author, lecturer and instructor, Patrick Carey has authored or co-authored more than 40 popular academic and trade texts for the academic market. He has taught and written about a wide range of topics, including website design, JavaScript programming, Microsoft Office and Excel, statistics, data analysis and mathematics. Mr. Carey received his M.S. in biostatistics from the University of Wisconsin, where he worked as a researcher designing and analyzing clinical studies. Today, he splits his time between Wisconsin and Colorado, and when he is not writing, he can be found hiking and cycling. Ms. Carol DesJardins spent 25 years in the private sector as a programmer, systems analyst and eventually Chief Information Officer. During that time, she honed her skills with Excel as an analysis tool. She transitioned her knowledge to the classroom and has taught several applications and programming courses. Ms. DesJardins co-authored her first textbook on Excel. In addition to writing, she continues to teach at St. Clair County Community College. An esteemed professional and respected author, Dan Oja, along with June Parsons, purchased an Apple II+ in 1981 and quickly became fluent in BASIC, dBASE II, Lotus 123, WordStar, and a variety of accounting programs. The next year, he and Dr. Parsons opened a successful small computer retail store that offered software instruction to children and adults. With Dr. Parsons, Mr. Oja began writing and creating educational software for Course Technology in 1992. Together, they contributed to the leading success of the Windows for Business and Illustrated Series. They also developed the New Perspectives, e-Course, and Practical series. Today, Mr. Oja's and Dr. Parson's team of highly skilled media specialists and desktop publishers located in various states and provinces work together via the Internet to deliver exceptional texts. June Jamrich Parsons is an educator, d