Counting and Aggregating with data.table: Efficient Data Manipulation in R

Efficiently Concatenating Character Content Within One Column by Group in R: A Comparative Analysis of tapply, Aggregate, and dplyr Packages

How to Perform Arithmetic Operations on Multiple Columns with Pandas Agg Function

Grouping and Aggregating Data with Mixed Types: A Practical Guide to Handling Floats, Integers, and Strings

Grouping Columns into Intervals and Aggregating Corresponding Values with R