A)Compute the value of the linear correlation coefficient for the data obtained in the study of the number of absences and the final grade of the seven students in the statistics class given as following data.

Students

A

B

C

D

E

F

G

Number of Absences X

6

2

15

9

12

5

8

Final Grades(%) Y

82

86

43

74

58

90

78

B)Find the equation of the regression line for the above data (Absences and Final Grades)

i)Graph the line on the scatter plot

ii)Predict the final grade for a student who missed 4 classes.