A sales manager for an advertising agency believes that there is a relationship between the number of contacts that a salesperson makes and the amount of sales dollars earned. A regression analysis shows the following results: What is the regression equation?
A) = 2.195 - 12.201X
B) = -12.201 + 2.195X
C) = 12.201 + 2.195X
D) = 2.195 + 12.201X

Question

A sales manager for an advertising agency believes that there is a relationship between the number of contacts that a salesperson makes and the amount of sales dollars earned. A regression analysis shows the following results:  What is the regression equation?
A) = 2.195 - 12.201X 
B) = -12.201 + 2.195X 
C) = 12.201 + 2.195X 
D) = 2.195 + 12.201X

Quizplus · Accepted Answer

The regression equation takes the form of Y = a + bX, where Y is the amount of sales dollars earned and X is the number of contacts made. According to the regression analysis, the intercept (a) is -12.201 and the slope (b) is 2.195. Therefore, the correct regression equation is Y = -12.201 + 2.195X, which matches option B.

A Sales Manager for an Advertising Agency Believes That There