Question

1. In a certain exercise, the data on scores and prices were as follows. A given price would determine a particular score that was obtained. Scores Prices 363 73 345 79 169 58 123 53 195 69 166 56 155 66 153 59 123 46 172 79 228 63 153 55 189 63 133 61 183 51 117 73 240 68 183 73 i. Describe the relationship between scores and prices using a scatter plot for the above data (4 marks) ii. Fit an estimated linear regression equation showing the relationship between scores and prices. Interpret the regression coefficients (3 marks) iii. Interpret the model prediction power (2 mark) iv. At 𝛼 = 0.05 , Interpret the level of association between scores and prices (3 marks) v. At 𝛼 = 0.04, test for the overall significance of the estimated regression model (3 marks) vi. At 𝛼 = 0.02, test for the significance of regression coefficient (3 marks

          1. In a certain exercise, the data on scores and prices were as follows. A given price
would determine a particular score that was obtained.
Scores Prices
363 73
345 79
169 58
123 53
195 69
166 56
155 66
153 59
123 46
172 79
228 63
153 55
189 63
133 61
183 51
117 73
240 68
183 73
i. Describe the relationship between scores and prices using a scatter plot for
the above data (4 marks)
ii. Fit an estimated linear regression equation showing the relationship
between scores and prices. Interpret the regression coefficients
(3 marks)
iii. Interpret the model prediction power (2 mark)
iv. At 𝛼 = 0.05 , Interpret the level of association between scores and prices
(3 marks)
v. At 𝛼 = 0.04, test for the overall significance of the estimated regression
model (3 marks)
vi. At 𝛼 = 0.02, test for the significance of regression coefficient (3 marks

Added by Thomas D.

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