The owner of Maumee Ford-Mercury-Volvo wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year.

a. Draw a scatter diagram.
b. Determine the correlation coefficient.
c. Interpret the correlation coefficient. Does it surprise you that the correlation coefficient isnegative?

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Car Age (years) Selling Price($000) Car Age (years) Selling Price ($000) 8.1 6.0 3.6 4.0 5.0 10.0 7.6 8.0 8.0 6.0 8.6 8.0 10 12 12 10 12