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

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 ...

Learning quick skills like social media scheduling, video editing and proofreading could put you well on your way to a ...

With the functions I'll discuss here, you can make data cleanup much easier in Excel. They allow you to extract, style, split, and join text to get what you need without wasting hours doing it ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

A roundup of the most-read Carolyn Hax columns of 2025 includes a woman’s birthday obsession, a flight-tracking in-law and a petty inheritance decision. Carolyn Hax writes a daily advice column for ...

Caroline Banton has 6+ years of experience as a writer of business and finance articles. She also writes biographies for Story Terrace. Eric's career includes extensive work in both public and ...

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