The following data is of the age of an item and the associated price of that item.
Age (yr) 5 4 6 5 5 5 6 6 2 7 7
Price ($) 85 103 70 82 89 98 66 95 169 70 48
a. Calculate the correlation coefficient for this set of data.
b. Determine the regression equation for this set of data.
c. Calculate the coefficient of determination.