The examples on this page show tables of increasing size which require slightly different choices in how to present the data. Listen to the audio descriptions to hear the differences. Simple 2-Column ...

R data.table code becomes more efficient — and elegant — when you take advantage of its special symbols and functions. With that in mind, we’ll look at some special ways to subset, count ...

As you’re working on your own pivot tables, you can experiment to see how added and removing fields affects the data that’s displayed. You’ll find that Excel does a great job of making ...