The manager of Information Services at Wilkin Investigations, a private investigation firm, is studying the relationship between

Question:

The manager of Information Services at Wilkin Investigations, a private investigation firm, is studying the relationship between the age (in months) of a combination printer, copier, and fax machine and its monthly maintenance cost. Create a scatter graph and compute the correlation coefficient. Describe the results of your analysis.

Months                 Monthly Cost
33 . . . . . . . . . . . . . . . . .   88
35 . . . . . . . . . . . . . . . . .   97
35 . . . . . . . . . . . . . . . . . 111
36 . . . . . . . . . . . . . . . . .   90
37 . . . . . . . . . . . . . . . . .   79
37 . . . . . . . . . . . . . . . . .  93
38 . . . . . . . . . . . . . . . . . 105
39 . . . . . . . . . . . . . . . . . 109
43 . . . . . . . . . . . . . . . . .   98
43 . . . . . . . . . . . . . . . . . 107
44 . . . . . . . . . . . . . . . . . 100
41 . . . . . . . . . . . . . . . . . 123
41 . . . . . . . . . . . . . . . . . 126
47 . . . . . . . . . . . . . . . . . 121
48 . . . . . . . . . . . . . . . . . 109

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Related Book For  book-img-for-question

Statistical Techniques In Business And Economics

ISBN: 9781260239478

18th Edition

Authors: Douglas Lind, William Marchal, Samuel Wathen

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