Mr

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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.

Determine the standard error of estimate and the coefficient of determination. Interpret the coefficient of determination.Â

Data:

Contacts x	Sales y
14	24
12	14
20	28
16	30
46	80
23	30
48	90
50	85
55	120
50	110