TABLE 13-9
It is believed that, the average numbers of hours spent studying per day (HOURS) during undergraduate education should have a positive linear relationship with the starting salary (SALARY, measured in thousands of dollars per month) after graduation. Given below is the Excel output from regressing starting salary on number of hours spent studying per day for a sample of 51 students.
Note: Some of the numbers in the output are purposely erased.

-Referring to Table 13-9, the estimated average change in salary (in thousands of dollars) as a result of spending an extra hour per day studying is
A) -1.8940
B) 0.7845
C) 0.9795
D) 335.0473

Question

TABLE 13-9
It is believed that, the average numbers of hours spent studying per day (HOURS) during undergraduate education should have a positive linear relationship with the starting salary (SALARY, measured in thousands of dollars per month) after graduation. Given below is the Excel output from regressing starting salary on number of hours spent studying per day for a sample of 51 students.
Note: Some of the numbers in the output are purposely erased.
 
-Referring to Table 13-9, the estimated average change in salary (in thousands of dollars) as a result of spending an extra hour per day studying is
A) -1.8940 
B) 0.7845 
C) 0.9795 
D) 335.0473

Quizplus · Accepted Answer

According to the Excel output, the coefficient for HOURS is 0.9795, which represents the estimated average increase in salary (in thousands of dollars) for each additional hour spent studying per day. Therefore, the answer is C.

TABLE 13-9 It Is Believed That, the Average Numbers of Hours Spent