Regression Equations, Generalized Least Squares, Correlation Matrices, Python, Statsmodels.
RAR on Halliburton increases (decreases) by 2.2377% with a 95% confidence interval of [2.059%, 2.417%]. A comparison with the OLS model Earlier in the article, we mentioned that fitting the 8 regression equations in the system separately using OLS will lead to imprecisely estimated models as OLS