15 Refer to Exercise 14. After the least squares line has been obtained, the following table (which is similar to Table 4 )

can be used (1) to compare the observed and the predicted values of y and (2) to compute SSE.

a. Complete the table.

b. Plot the least squares line on a scatterplot of the data.
Plot the following line on the same graph:
yn = 14 - 2.5x

c. Show that SSE is larger for the line in part b than it is for the least squares line.

Transcribed Image Text:

x y (y-) (y - ) 7 2 4 4 6 2 25 1 7 16 3 5 (y-) SSE == = (y-3)= ==