Mastering Group by and Conditional Count in R's dplyr Library: A Deep Dive

Sampling from a Known Distribution Under a Rejection Criterion: A Geometric Distribution Approach

Understanding SQL Aggregations with GROUP BY: Count and Beyond

Understanding the Limitations of COUNT(CASE) in Division Operations: Casting Solutions to Avoid Truncation Issues

Creating a New Column with Variable Names Based on Presence in Data Frame: A Comparative Analysis of Regular Expressions and Apply Functions

Counting Number of Each Factor Grouping by Another Factor in a Dataset Using R.

Understanding Combinations in R: A Comprehensive Guide to Efficient Calculations