TABLE 13-6
The following Excel tables are obtained when "Score received on an exam (measured in percentage points)" (Y) is regressed on "percentage attendance" (X) for 22 students in a Statistics for Business and Economics course.

-Referring to Table 13-6, which of the following statements is true?
A) If attendance increases by 0.341%, the estimated mean score received will increase by 1 percentage point.
B) If attendance increases by 1%, the estimated mean score received will increase by 39.39 percentage points.
C) If attendance increases by 1%, the estimated mean score received will increase by 0.341 percentage points.
D) If the score received increases by 39.39%, the estimated mean attendance will go up by 1%.

Question

TABLE 13-6
The following Excel tables are obtained when "Score received on an exam (measured in percentage points)" (Y) is regressed on "percentage attendance" (X) for 22 students in a Statistics for Business and Economics course.
 
-Referring to Table 13-6, which of the following statements is true?
A) If attendance increases by 0.341%, the estimated mean score received will increase by 1 percentage point. 
B) If attendance increases by 1%, the estimated mean score received will increase by 39.39 percentage points. 
C) If attendance increases by 1%, the estimated mean score received will increase by 0.341 percentage points. 
D) If the score received increases by 39.39%, the estimated mean attendance will go up by 1%.

Quizplus · Accepted Answer

According to the table, the coefficient for the percentage attendance is 0.341. This means that for every 1% increase in attendance, the estimated mean score received will increase by 0.341 percentage points. Therefore, if attendance increases by 1%, the estimated mean score received will increase by 0.341 percentage points (not 39.39 as stated in option B). Option A is also incorrect because the coefficient for attendance is not equal to 1. Option D is incorrect because it assumes causality in the opposite direction, which cannot be inferred from this regression analysis.

TABLE 13-6 the Following Excel Tables Are Obtained When "Score Received on Received