Question

ilson Products Incorporated is interested in the relationship between number of sales calls (x) made by their sales reps and the number of products sold (y). A random sample of 10 sales reps showed the following calls and sales over a one-month period. (1.) Build the regression equation for this data set. (2.) Predict the amount of product sold if 11 sales calls are made.

x y

Sales Calls Products Sold

12 9 Given:

9 7 r = .904

14 10 standard deviation x = 2.726

6 5 standard deviation y = 2.011

10 8 You must calculate and

8 6

10 8

10 10

5 4

7 7

1. Build the regression equation:

2. Predict products sold to the nearest whole if you make eleven sales calls.

Answer 1

1) The estimate of slope is given by

The estimate of intercept is given by

Hence the regression line is

2) The estimated value when x=11 is

Hence the predicted price of sales is 9 units.

Thank you !!!