Excel’s Subtotal feature can render quick results when you need simple grouping calculations. Susan Harkins shows you how this powerful feature works. Excel’s Subtotal feature calculates subtotals and ...

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. This ...

Duplicates aren’t bad, but you may need to know how many times a value is repeated or how many unique values are in a data range. Here’s how to tackle these tasks in Excel. Counting duplicate values ...