Cleaning up data by hand in Excel is a recipe for mistakes, and even well-built formulas can become difficult to maintain as spreadsheets grow. Power Query is often dismissed as a tool for data ...

Did you know that data analysts spend up to 80% of their time cleaning and preparing data? If you’re nodding in agreement, you’re not alone. The good news is that tools like Power Query in Excel and ...

Have you ever wished your Excel formulas could think like reusable building blocks instead of static, one-off instructions? Imagine creating a single formula that adapts dynamically to your data, ...

Q. There was a December 2020 article in the JofA about cleaning and joining data using a program called Alteryx, but we don’t have access to this program. Could you explain how to do those tasks using ...