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C2.1. The table below shows the number of absences, x, in a Calculus course and the final exam marks, y for 8 students.

X

2

1

2

6

4

3

5

3

Y

93

90

94

60

72

82

70

84

a) Calculate the regression coefficients and hence find the correlation coefficient.

b) Find the regression equation of y on x.

c) Predict the mark of a student whose number of absence is 0.

Answer 1