The following data were collected during a study of consumer buying patterns:

observation

x

y

observation x

y

1

15

74

818

78

2

25

80

914

70

3

40

84

1015

72

4

32

81

1122

85

5

51

96

1224

6

47

95

1333

90

7

30

83

Aplot the data.

Bobtain a linear regression line for the data.

Cwhat percentage of the variation is explained by the regression line?

Duse the equation determined in part b to predict the expected value of y for x = 41.