申論題

3. Given data  and they are (0, 1) (4, 3) (4, 7) (0, 1), respectively. You use two linear
regression models (called Model 1 and Model 2) with two parameters c and d to fit these data points.
They are state as follows:
Model1: y = c + dd + ε
Model 2: y = c + d√x + ε

(5) Find (coefficient of determination in Model 1 and in Model 2 respectively). (6)  According to the value of R², which Model (Model 1 or Model 2) is better?