1 A linear regression equation of best fit between a student’s attendance and the degree of success in school is h = 0.5x + 68.5. The correlation coefficient, r, for these data would be

(1) 0 <r <1         (3)r = 0
(2) –1 <r <0       (4)r = –1

1         2         3         4        

1         2         3         4        

1         2         3         4        

1         2         3         4        

1         2         3         4