Calculating the Difference Between Duplicates: A Deep Dive into Data Cleaning and Manipulation with R's Tidyverse Package

Understanding Tidyverse's map() Function for Accessing Column Names in Mapped Tables

Mastering Data Transformation: R Code Examples for Wide & Narrow Pivot Tables

R Dataframe Merge Using Timestamps with data.table Package for Overlapping Rows

Stacking Data: A Guide to Understanding and Applying Melt Sets in R and Python

Filling Missing Data in Tables with R Programming Language

Specify Column Types in read_csv by Using Values in a DataFrame

Selecting Non-NA Variables from Multiple Columns to Mutate into a Unified Variable in R

Here is the code with explanations and improvements.

Using R's Dplyr Package for Efficient Grouping and Summarization with Multiple Variables