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

If Word, Excel, PowerPoint automatically reset settings on exit, follow these instructions e.g. check folder and Reigtsry ...

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

Diarmuid Early won first place in the 2025 Microsoft Excel World Championship. He has some pointers for using Excel at work.

In winter, it’s important to ventilate living and working spaces regularly. Here’s how to make a homemade measuring station ...

FORECAST.ETS applies an exponential triple smoothing (ETS) algorithm to create forecasts that can include trend and seasonal ...

The SCAN function lives in a single cell and spills the results down the column, ensuring my totals are always structurally and mathematically correct. The SCAN function has three arguments: ...

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

Ailsa Ostovitz has been accused of using AI on three assignments in two different classes this school year. "It's mentally exhausting because it's like I know this is my work," says Ostovitz, 17. "I ...