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

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

If you've ever wished Excel could handle text patterns the way Python or JavaScript does, these functions deliver exactly ...

Learn to simulate stock prices with Excel and gain predictive power over market trends. Our step-by-step guide enhances your ...

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 ...

Following a thrilling end to the 2025 season, where Lando Norris secured his first Formula 1 world title in a three-way showdown to the wire, it's time to build up to the new 2026 season. In what is a ...

Your typical Excel workbook—the file you're working in—can get loaded with plenty of worksheets (each indicated by a tab at the bottom, which you can name). Hide a sheet if you want, rather than ...