From Power Query to the Data Model, here are the five architectural gaps that keep me paying for Microsoft 365.

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

Excel has a wide range of useful built-in functions, but that doesn't mean you should use them indiscriminately. One of the things you can do when Excel is lagging is examine certain formulas to ...

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

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 ...

Claire Boyte-White is the lead writer for NapkinFinance.com, co-author of I Am Net Worthy, and an Investopedia contributor. Claire's expertise lies in corporate finance & accounting, mutual funds, ...

F1 news, rumours and gossip: Formula 1 latest updates on teams, driver transfer market and contracts Follow the latest news from the world of Formula 1 ahead of the 2026 season. Friday 16 January 2026 ...

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Inkjet or laser? Need just printing, or have to scan and copy, too? Seeking low-cost ink, or a low-cost printer? Here's how to choose the right printer for home or work, backed by our top lab-tested ...