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MA2.1+Help[1]

# MA2.1+Help[1] - 1 A manager of a product sales group...

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. 1) A manager of a product sales group believes the number of sales made by an employee(Y) depends on how many years that employee has been with the company (X1) and how he/she scored on a business aptitude test (X2). A random sample of 8 employees provides the following Employee Y X1 X2 1 100 10 7 2 90 3 10 3 80 8 9 4 70 5 4 5 60 5 8 6 50 7 5 7 40 1 4 8 30 1 1 Referring to the table above, for these data, what is the value for the regression constant, b ? 0 A) 0.998 (B) 3.103 (C)4.698 (D) 21.293 2) Referring to the below table, if an employee who had been with the company 5 years scored a 9 on the aptitude test, what would his estimated expected sales be? Employee Y X1 X2 1 100 10 7 2 90 3 10 3 80 8 9 4 70 5 4 5 60 5 8 6 50 7 5 7 40 1 4 8 30 1 1 A) 79.09 (B) 60.88 (C) 55.62 (D) 17.98

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3) Referring to the below table, when the economist used a simple linear regression model with consumption as the dependent variable and GDP as the independent variable, he obtained an r2 value of 0.971. What additional % of the total variation of
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MA2.1+Help[1] - 1 A manager of a product sales group...

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