Add Yahoo as a preferred source to see more of our stories on Google. If you have three or more rows of data, chances are, you'll need to summarize those values in some way. Summarizing is one of the ...

When you compile data in a list, you often need to answer questions such as “How much revenue did the West Coast office generate last month?” or “What was the average number of customers served at ...

Have you ever spent hours wrestling with Excel formulas, only to end up with a tangled web of cells that’s nearly impossible to decipher? For many, this is the reality of data analysis: a painstaking ...