Old-school Excel functions like SUMPRODUCT, INDEX/MATCH, and IFERROR remain essential for stable, readable, and maintainable ...

As I showed in my first Excel functions article, the serious meat in any spreadsheet is the formulas and functions that perform the calculations. Excel offers functions that you can use to make the ...

re working with Excel you will use a calculation that is not available as a built-in Excel function. If you make this calculation repeatedly, you can save having to write the calculation each time you ...