11.13 Pairwise relationships among variables in the GPA data set. Most statistical software packages have the option to create a “scatterplot matrix’’ of all p(p + 1)/2 scatterplots. For example, in JMP, there is the option “Scatterplot Matrix’’ under the Graph menu. Figure 11.5 is the scatterplot matrix for the GPA data, including the least-squares lines. Comment on any unusual patterns or observations. Do you think the pairwise correlations or scatterplot matrix better describe the pairwise relationships? Explain your answer.