Rocks and rolls: The computational infrastructure of earthquakes and physics of planetary science

Sometimes to truly study something up close, you have to take a step back. That's what Andrea Donnellan does. An expert in ...

Learn What GROUPBY Can Really Do in Excel : From Smart Sorting to Percent of Totals

Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.