Similarly, regression weight β 2 is a measure of the relationship between T1 and M2 while controlling for M1, and is calculated as7\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \beta_{2} = \frac{{r_{t1,m2} - r_{t1,m1} r_{m1,m2} }}{{1 - r_{m1,m2}^{2} }}. $$\end{document}
