The owner of Maumee Ford-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.

Car Age (years) Selling Price ($000)
1 12 10.3
2 10 9.2
3 15 4.6
4 18 4.2
5 12 5.1
6 10 11.6
7 12 8.0
8 16 7.8
9 14 7.8
10 18 4.3
11 8 10.0
12 8 8.8