A large sales organization has collected data on the number of employees and the annual gross sales during the last 7 years.

(a) Develop a scatter diagram.

(b) Determine the correlation coefficient.

(c) Determine the coefficient of determination.

(d) Determine the least squares trend line by hand not QM

(e) Determine the predicted value of sales for 2100 employees

\begin{tabular}{|c|c|} \hline \# of employees & sales (in \$000s) \\ \hline 1975 & 100 \\ \hline 2010 & 110 \\ \hline 2005 & 122 \\ \hline 2020 & 130 \\ \hline 2030 & 139 \\ \hline 2031 & 152 \\ \hline 2050 & 164 \\ \hline 2100 & ? \\ \hline \end{tabular}