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Excel's Formula - sisman

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Introducing Worksheet<br />

Functions<br />

In This Chapter<br />

● The advantages of using functions in your formulas<br />

● The types of arguments used by functions<br />

● How to enter a function into a formula<br />

● Excel’s function categories<br />

103<br />

4<br />

A thorough knowledge of Excel’s worksheet functions is essential for anyone who wants to master<br />

the art of formulas. This chapter provides an overview of the functions available for use in<br />

formulas.<br />

What Is a Function?<br />

A worksheet function is a built-in tool that you use in a formula. Worksheet functions allow you to<br />

perform calculations or operations that would otherwise be impossible. A typical function (such<br />

as SUM) takes one or more arguments and then returns a result. The SUM function, for example,<br />

accepts a range argument and then returns the sum of the values in that range.<br />

You’ll find functions useful because they<br />

Simplify your formulas<br />

Permit formulas to perform otherwise impossible calculations<br />

Speed up some editing tasks<br />

Allow conditional execution of formulas — giving them rudimentary decision-making<br />

capability<br />

The examples in the sections that follow demonstrate each of these points.

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