Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

Have you ever grouped data in Excel only to find your months sorted alphabetically instead of chronologically? It’s a frustrating quirk of the GROUPBY function, one that can turn a clean dataset into ...

There are many ways to sort data in Microsoft Excel, and one of the simplest and most convenient is the SORTBY function. It lets you dynamically sort your data by more than one array while preserving ...