Daniel writes guides on how to use the internet, explainers on how modern technology works, and the occasional smartwatch or e-reader review. He especially likes deep diving into niche topics that ...

Have you ever thought of the humble SUM function as a secret weapon for advanced analytics? Most Excel users see it as a basic tool for adding numbers, but what if I told you it could do so much more?

It's easy to add a set of numbers together — every spreadsheet user knows how to use the tried-and-true SUM function to find a total. But what if the sum you're trying to find depends on some sort of ...

Summing only the positive or negative values in the same range of values only sounds difficult. Fortunately, the SUMIF() function can handle both. Summing only the negative values in a range of values ...