Functions are prewritten formulas that simplify the process of entering calculations. Using functions, you can quickly create formulas that might be difficult to build yourself. Although many functions, such as SUM or AVERAGE, are easy to figure out without help, others may require more guidance. Watch this demo to learn how to get help for functions in Excel 2007.
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Get to know Excel 2007: Enter formulas
Create or delete a formula
Use Formula AutoComplete
Examples of commonly used formulas
Create or change a cell reference
List of worksheet functions (alphabetical)
List of worksheet functions (by category)