Key Points

• A number of filters are defined in Excelyou may find the one you want already in place.

• Filtering an Excel worksheet based on values in a single column is easy to do, but you can create a custom filter to limit your data based on the values in more than one column as well.

• Dont forget that you can get a running total (or average, or any one of several other summary operations) for the values in a group of cells. Just select the cells and look on the status bar: the result will be there.

• Functions arent set in stone when you create them. You can use the controls in the Function box to edit your functions.

• Use data validation techniques to improve the accuracy of data entered into your worksheets, and to identify data that doesnt meet the guidelines you set.