Excel's GROUPBY function lets you group and aggregate data based on certain fields in your table of data. It also offers arguments that allow you to sort and filter your data, so you can tailor the ...

You'd think that PivotTables are the easiest and least stressful way to summarize data in Excel. For a long time, I believed that, too. That changed once I got comfortable enough using GROUPBY and ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Erika Rasure is globally-recognized as a leading consumer economics subject matter expert, researcher, and ...