Make Excel do the math and make sense of your data Use the Insert Function dialog box, array formulas and functions, and more Excel 2007 has more than 500 built-in functions. This book looks at the top 150, so you can find out which ones will make your life easier. Want to compare a 15-year mortgage to a 30-year mortgage? Forecast expenses for your college freshman? See how your online business is doing? Here's the fun and easy way! Discover how to Create worksheets to track costs and revenue Tell the difference among average, median, and mode Work with statistical functions Develop forecasts and track trends Manipulate strings and work with database functions