1 Summarizing Excel data with Pivot Tables
If you've ever been presented with an Excel spreadsheet with a gosh-awful number of rows and/or columns in it and assigned the task of making sense of all those numbers (grouping, summarizing, or making other calculations), you need to learn about Pivot Tables.
Okay, people, I hear yawning out there! Seriously, this is a good skill to have in your back pocket, even if you only work with Excel occasionally, because it saves so much time. So to motivate you properly, here's a fun little YouTube introduction to the whys behind Pivot Tables: