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Line of regression.

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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 client sampled.

Number of Sales Number of Sales
Contacts ($ thousands) Contacts ($ thousands)
X Y X Y
14 24 23 30
12 14 48 90
20 28 50 85
16 30 55 120
46 80 50 110

a. Determine the regression equation.
b. Determine the estimated sales if 40 contacts are made.

ALL INFORMATION MUST BE PLACED ON AN EXCEL SPREADSHEET.

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Solution Summary

Line of regression of number of sales by considering number of contacts as independent variable has been determined.

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