Extending sapply to Apply List of Variables and Saving Output as List of Data Frames in R

Repeated Conditional Changes in R: Choosing Between sapply and lapply

Creating Multiple Histograms with Title and Mean as a Line in R Using ggplot2 and Customized Options

Comparing Levels to Not Levels in Chi-Squared Test Using R

Applying Operations to DataFrames Using `mapply` in R: A Comprehensive Guide