See how to join two data sets by one or more common columns using base R’s merge function, dplyr join functions, and the speedy data.table package. R has a number of quick, elegant ways to join data ...

Excel’s Data Model feature allows you to build relationships between data sets for easier reporting. Here’s how to use it to make data analysis easier. We may earn from vendors via affiliate links or ...

How do I do that in data.table? Find code for dozens of data tasks in this searchable cheat sheet of R data.table and Tidyverse code. Speed. Concise syntax. Backwards compatibility. But especially ...

If you’ve have lots of data and lots of analysis to do, but little time or skill, you need Excel’s Power Pivot feature. Here’s how to get started with it. Excel Power Pivot is a data analysis feature ...

Q. You explained Excel’s Scenario Manager in your November 2024 Tech Q&A article and Goal Seek in your December 2024 Tech Q&A article. Can you please explain the final What-If Analysis tool: Data ...