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

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

To make the most of the UNIQUE function, you should make sure your array is in an Excel table. By using a table name rather ...

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

Caroline Banton has 6+ years of experience as a writer of business and finance articles. She also writes biographies for Story Terrace. Suzanne is a content marketer, writer, and fact-checker. She ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. What Is the Calculating Compound Annual Growth Rate ...

This project is a port of the excel-formula library to ES6. It contains a set of functions that can be used to pretty print Excel formulas and convert them into JavaScript, C# or Python code.