The following is the data obtained in the study of the number of absences and the final grade of the seven students in the mathematics class.
Student
A
B
C
D
E
F
G
Number of absences
6
2
15
9
12
5
8
Final grade
82
86
43
74
58
90
78
Construct a scatter diagram for these data. (6 Marks)
Calculate the correlation of coefficient (r). Interpret the results. (6 Marks)
Find the regression equation. (8 Marks)
Plot a regression line on the scatter diagram of part (a). (3 Marks)
Predict the final grade with 10 number of absences. (3 Marks)
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