Do High School Grades Predict College Academic Success? Below Are

Short Answer

Do high school grades predict college academic success? Below are data collected from some recent college graduates.
$$\begin{array} { c c } \hline \text { high school GPA } & \begin{array} { c } \text { College } \\\text { GPA }\end{array} \\\hline 3.4 & 3.2 \\2.8 & 3.6 \\2.9 & 3.1 \\3.1 & 3.4 \\3.6 & 3.6 \\3.8 & 3.5 \\3.4 & 2.9 \\3.6 & 3.3 \\3.3 & 3.8 \\3.3 & 3.5 \\3.1 & 3 \\3 & 3.1 \\3.6 & 3.7 \\3.7 & 3.9 \\2.6 & 3.1 \\2.2 & 3.2 \\2.8 & 2.7 \\3.1 & 3.5 \\3 & 3 \\\hline\end{array}$$ How many degrees of freedom are there?