Merging Multiple Rows into One Row in R: A Comprehensive Guide

Transforming a Data Frame from Wide to Long Format with Tidyr: A Step-by-Step Guide

Performing a Friedman Test in R: A Step-by-Step Guide for Each Group Separately

Here's a summary of the provided information and some additional examples to demonstrate the usage of the `melt()` function in R:

Creating a List of 2X3X3 Correlation Matrices Using tidyr and dplyr in R to Analyze Variable Evolution Over Time.

Creating Tables or Data Frames of Members of a Group in Cluster Analysis

Filtering and Subsetting a Data Frame in R Based on Specific Character Positions