Have you ever grouped data in Excel only to find your months sorted alphabetically instead of chronologically? It’s a frustrating quirk of the GROUPBY function, one that can turn a clean dataset into ...

This is the sixth in a series of lecture notes which, if tied together into a textbook, might be entitled “Practical Regression.” The purpose of the notes is to supplement the theoretical content of ...

Working with large datasets in Excel often presents challenges, particularly when clarity and organization are essential. Dynamically inserting blank rows between items is a highly effective method to ...