Resolving the Contrasts Error: A Step-by-Step Guide for Linear Models in R

Understanding Na.action in lapply with lm Function for Accurate Linear Regression Modeling

Passing Additional Arguments to a Function Call Using Ellipsis in R with Environments and match.call()

Comparison of Coefficient Test Across Subsamples in Clustered Models

Using speedlm's updateWithMoreData for Error-Free Updates

Displaying Model Summary Statistics for Linear Models Using R's lmer and jtools Packages