LAMBDA defines the custom logic, and SCAN moves that logic through your data range.

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

Learn how to use the LAMBDA function in Excel to simplify complex formulas by creating custom functions for recurring ...

The simulation hypothesis—the idea that our universe might be an artificial construct running on some advanced alien computer—has long captured the public imagination. Yet most arguments about it rest ...

Life gets busy, and sometimes those basic math skills from school days get a little rusty. Whether you're budgeting, measuring for a DIY project, or just having a math-related brain teaser thrown your ...

For the past several years, America has been using its young people as lab rats in a sweeping, if not exactly thought-out, education experiment. Schools across the country have been lowering standards ...

Math scores in the US have been so bad for so long that teachers could be forgiven for trying anything to improve them. Unfortunately, many of the strategies they’re using could be making things worse ...

Q. How do the TEXTBEFORE and TEXTAFTER functions in Excel work? A. Excel’s TEXTBEFORE and TEXTAFTER functions allow users to quickly split up text in ways that used to require combinations of ...

A decade-long slide in high schoolers’ reading and math performance persisted during the COVID-19 pandemic, with 12th graders’ scores dropping to their lowest level in more than 20 years, according to ...

The U.S. secretary of education is having issues with basic math. Linda McMahon testified on Trump’s 2026 budget before the Senate on Tuesday. While discussing spending on federal grants programs for ...