Regression equation to estimate value of dependent variable

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Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion,Mr. McWhinney gathered the following sample information. The x column indicates the number of client contacts last month, and the y column shows the value of sales ($ thousands) last month for each salesperson sampled.

Salesperson

Contacts (x)

Sales (y)

Robert Armstrong

14

     24

Jack Bender

12

                    14

Dorothy Brumley

20

                    28

Carmen Carella

16

                    30

Annette Perrault

46

                    80

Mary Jane Duryee

23

                    30

David Gwyer

48

                    90

Harvey Lazik

50

                    85

Ray Osbeck

55

                   120

Al Montanaro

50

                   110

A. Determine the regression equation.

B. Determine the estimated sales if 40 contacts are made.

Reference no: EM1315245

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