Answer
$R^2=95.7$%
97.5% of the variability of the price is explained by the variability in size.
Work Step by Step
Use the results obtained with the MINITAB in item (d) (see the picture):
$R^2=95.7$% $=0.957$
Or use the relation from Section 4.3:
$R^2=r^2=0.979^2=0.958=95.8$%
The difference is due to the number of decimal plates of $r$. Go back to the result found in part (b), with the MINITAB, and change the number of decimal plates from 3 to 6:
$R^2=r^2=0.978508^2=0.957=95.7$%
