In This Chapter
A thorough knowledge of Excel’s worksheet functions is essential for anyone who wants to master the art of formulas. This chapter provides an overview of the functions available for use in formulas.
A worksheet function is a built-in tool that you use in a formula. Worksheet functions allow you to perform calculations or operations that would otherwise be impossible. A typical function (such as SUM) takes one or more arguments and then returns a result. The SUM function, for example, accepts a range argument and then returns the sum of the values in that range.
You’ll find functions useful because they
The examples in the sections that follow demonstrate each of these points.
Using a built-in function can simplify a formula significantly. For example, you might need to calculate the average of the values in 10 cells (A1:A10). Without the help of any functions, you would need to construct a formula like this:
Not very pretty, is it? Even worse, you would need to edit this formula if you inserted a new row in ...