Excel Dictionary on MSN

Summing category values with Excel SUMIF

A simple guide to using the SUMIF function to total values based on specific categories. It shows how to organize data and quickly calculate category-based totals in a spreadsheet. #Excel #SUMIF #Spre ...
Ars Technica

Using Excel's SUMIF (or SUMIFS) with a column of criteria

I keep running into situations in Excel where I want to calculate a conditional sum, but my criterion is something along the lines of "Include cell B1 if cell A1 is a number, likewise B2 and A2, B3 ...