How to use the SUMIF function in Excel to add the values in a range that meet criteria that you specify.| support.microsoft.com
Master the art of Excel formulas with our comprehensive guide. Learn how to perform calculations, manipulate cell contents, and test conditions with ease.| support.microsoft.com
Formulas can sometimes result in error values in addition to returning unintended results. Learn about best practices to avoid those problems.| support.microsoft.com
Lists all Excel functions by their category, such as Logical functions or Text functions.| support.microsoft.com
A complete list of all Excel functions in alphabetical order.| support.microsoft.com
You can use error checking to detect errors in formulas. The rules don't guarantee error-free worksheets, but they can help find common mistakes. Errors can include: Cells containing formulas that result in an error, inconsistent calculated column formula in tables, cells containing years represented as 2 digits, numbers formatted as text or preceded by an apostrophe, formulas inconsistent with other formulas in the region, formulas which omit cells in a region, unlocked cells containing form...| support.microsoft.com
How to use the COUNTIF function in Excel to count the number of cells that meet values you set.| support.microsoft.com
How to use the COUNTIFS function in Excel to apply criteria to cells, across multiple ranges, and count the number of times all criteria are met.| support.microsoft.com