Use formulas instead of Power Query for tidy files, with a visible source path and clear parameters that teammates can review ...

Dr. James McCaffrey presents a complete end-to-end demonstration of linear regression with pseudo-inverse training implemented using JavaScript. Compared to other training techniques, such as ...

Discover 15 modern Excel functions for 2026, including Group By and Scan, so you speed up your workflows, summaries and ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Andy Smith is a Certified Financial Planner (CFP®), licensed realtor and ...

Live updates after the Justice Department posted another trove of Epstein files more than two months after Trump signed a ...

Excel gets a host of new features in January 2026 ...

Key cyber updates on ransomware, cloud intrusions, phishing, botnets, supply-chain risks, and nation-state threat activity.

I traded the static results of Flash Fill for dynamic formulas that update automatically.

This week’s cybersecurity recap highlights key attacks, zero-days, and patches to keep you informed and secure.

Carol M. Kopp edits features on a wide range of subjects for Investopedia, including investing, personal finance, retirement planning, taxes, business management, and career development. Monte Carlo ...

Cowork is a user-friendly version of Anthropic’s Claude Code AI-powered tool that’s built for file management and basic computing tasks. Here’s what it's like to use it. This poor track record makes ...