Choosing the Right Method for Calculating Variance-Covariance Matrices in Panel Data Models Using R

How to Print Regression Output with `texreg()` Function in R and Include `Adj. R^2` and Heteroskedasticity Robust Standard Errors

Understanding Generalized Least Squares (GLS) and Fixed Effects in R: A Comprehensive Guide to Handling Heteroskedasticity and Confounding Variables