t{s_{yy}}}$$
                    <p>\(s_{xy},s_{xx},s_{yy}\) are defined as:</p>
                    <span id="mathjax_6_2">$$\begin{align*}
                    s_{xy} &=\sum^n_{i=1} (x_i-\bar{x})(y_i-\bar{y})\\
                    s_{xx} &=\sum^n_{i=1} (x_i-\bar{x})^2\\
                    s_{yy} &=\sum^n_{i=1} (y_i-\bar{y})^2
                    \end{align*}$$</span>
                    <p>It can also be understood as the cosine of the angle formed by the ordinary least square line determined in both vari