Table 8.3
A textbook publisher for books used in business schools believes that the number of books sold is related to the number of campus visits to decision makers made by their sales force. A sampling of the number of sales calls made and the number of books sold is shown in the following table.

-Use the information provided in Table 8.3. For every sale call made, the number of books sold increases by:
A) 14.74 books.
B) 104.6 books.
C) 83.30 books.
D) 7.25 books.

Question

Table 8.3
A textbook publisher for books used in business schools believes that the number of books sold is related to the number of campus visits to decision makers made by their sales force. A sampling of the number of sales calls made and the number of books sold is shown in the following table.

-Use the information provided in Table 8.3. For every sale call made, the number of books sold increases by:
A) 14.74 books. 
B) 104.6 books. 
C) 83.30 books. 
D) 7.25 books.

Quizplus · Accepted Answer

The correct answer is derived from the slope of the regression line, which represents the average increase in the number of books sold for each additional sales call made.

Table 8.3 A Textbook Publisher for Books Used in Business Schools Believes