Summarizing data is a common task in Excel, and there's usually more than one way to do so. Susan Harkins explains three ways to return averages for multiple groups.

For many years, I used the SUBTOTAL function in Microsoft Excel to create easily visible subtotals at the top of my worksheets. However, when I encountered AGGREGATE, this became my go-to function ...

Almost every month, I suggest the Subtotal feature to a reader. It's an easy-to-use feature that summarizes data by groups. You define the group and the summarizing function; Excel does the rest ...

As I showed in my first Excel functions article, the serious meat in any spreadsheet is the formulas and functions that perform the calculations. Excel offers functions that you can use to make the ...

There's more to Excel's Subtotal feature than you might realize. You can add multiple subtotaling functions to the same row, and you can add multiple rows.

If your subtotaling rows are lost in a sea of worksheet data, use this simple conditional formatting technique to make those rows easy to spot.

If they were grouped through the Subtotal function, you will see a subtotal row immediately below the set of grouped rows. If you do not see this extra row, the rows were grouped manually.