A psychologist obtains the IQ of 14 individuals, each of which is asked to take a particular test. The results are as follows:

IQ Test Scores

99

110

141

108

123

129

132

88

101

105

97

96

118

113

Test Scores

54

70

100

61

83

86

93

51

64

68

52

55

71

76

(a) Construct a scatter diagram of these data

(b) Calculate the sample regression line, where the test score is the dependent variable and the IQ is the independent variable

(c) Calculate r and test.

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