Row precision vs. Aggregation errors: MAP is the best way to use "greedy" functions like AND or OR in a single, dynamic ...

Whether you're assigning random shifts, anonymizing a study, or shuffling a deck, randomizing rows in an Excel table manually ...

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

Handle millions of rows by loading queries into Power Pivot, building relationships, and creating measures for fast variance ...