Learn how Excel functions can act as data using LAMBDA, LET, and BYROW, so you reuse logic and cut formula edits.

Excel processes the range (A1:A10) by converting it into an array in memory. This array is what Excel works with to calculate the sum. The distinction is subtle but important: while the range is the ...

Before it took over her life, Leila Gharani mostly took Microsoft Excel for granted. She was working on a process optimization project for a large paper-products manufacturer—a job that, to hear her ...

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Nishioka, M. (2026) Time Lag and Amplitude Differences between Correlated Variables in Global Temperature Changes.

A laser measurer can help you take more accurate measurements at longer distances. Our favorite model has a handy feature that makes it ideal for use anywhere.

Five hidden Excel rules show helper columns, LET, and LAMBDA in action, cutting errors and making updates quick for any ...

We show you how to create a budget or personal finance dashboard in Excel to keep your expenses in sync with reality. Useful ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Charlene Rhinehart is a CPA , CFE, chair of ...