Excel - Automatic calculation

Excel has a feature that can automatic shows aggregate statistics about your data, no code or formula is needed. You do not even need to click a button!

For example, I have data below. If I select the data range, aggregate statistics automatically show at the end of the Excel window. By default, it shows average, count and sum. However, if you click on the little down arrow to the right of "Sum" (in red circle in the picture below), you can customize which statistics to show.


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