Determining estimated sales if contacts are made

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Q1) Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship between number of client contacts and dollar amount of sales. To document this assertion, Mr. McWhinney gathered the following sample information. X column indicates number of client contacts last month, and Y column shows the values of sales ($ thousands) last month, and Y column shows the values 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

i) Determine out the regression equation.

ii) Determine the estimated sales if 40 contacts are made.

Reference no: EM1319676

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