From the graph, the observed values are
x y
1 1
2 3
3 5
4 7
5 8
6 9
7 12
8 16
The equation of the best line of fit is shown below
y = 1.94x - 1.107
The predicted values and residuals are
x y' y - y'
1 0.833 0.167
2 2.773 0.227
3 4.713 0.287
4 6.653 0.347
5 8.593 - 0.593
6 10.533 - 1.533
7 12.473 - 0.473
8 14.413 1.587
By comparing the values of x and y - y',
the correct option is A
