Can someone define data aggregation and explain how it works? or What does it mean to define data agg

Data aggregation is when you smoosh a ton of data together to get the big picture. Like, your phone tracks steps daily, but you might wanna see weekly totals—that’s aggregation.

Works by grouping + math (sum, avg, etc.). Tools? SQL for pros, Excel for beginners.

Why matter? ’Cause CEOs don’t got time for raw data—they want the CliffsNotes version.