Information Systems

ISDS 361A

Dr. Huang

Case Study

The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned Camry depends upon many factors, including the model year, mileage, and condition. To investigate the relationship between the car’s mileage and the sales price for a 2007 model year Camry, the following data show the mileage and sales price for 19 sales (PriceHub website, February 24, 2012). Suppose that you are considering purchasing a previously owned 2007 Camry that has been driven 60,000 miles. What price you would offer to the seller and why?

Miles (1000s) Price ($1000s)
22 16.2
29 16
36 13.8
47 11.5
63 12.5
77 12.9
73 11.2
87 13
92 11.8
101 10.8
110 8.3
28 12.5
59 11.1
68 15
68 12.2
91 13
42 15.6
65 12.7
110 8.3

Your report should have the following qualities:

1. Your report must be in a genuine report format with problem definition, analysis and final conclusion.

2. All important analysis steps needs to be followed to arrive at the model to be used for prediction. Attach the details of your analysis at the end of your report. Very simplistic analysis with no sufficient details is assigned a near zero credit. Just running excel does not guarantee any credit.

3. The report should including the discussions of the scatter diagram, regression equation, test for significant relationship, coefficient of determination, correlation coefficient, interpretation of the slope of the regression equation, 95% prediction interval and the 95% confidence interval of the mean sales price given mileage.

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