Aggregating Rows with Shared Values and Simultaneously Choosing a Value in a Separate Column

Understanding Aggregate Functions in R: A Deep Dive into FUN=max

Creating a Stacked Barplot in R: A Step-by-Step Guide to Aggregating Sampled Data

Understanding the Aggregate Function in R: Avoiding Confusion with Subset Functions

Aggregating by Day of Week in R: A Step-by-Step Guide