Question

Consumers Union provides ratings on a large variety of consumer products. They use sophisticated testing methods as well as surveys of their members to create these ratings.    

One recent article rated laundry detergents on a scale from 1 to 100. Here are the ratings along with the price per load, in cents, for 24 laundry detergents:

   

Rating	Price (cents)
59	18
55	30
48	16
46	13
35	8
32	5
59	22
52	23
47	15
46	13
34	12
29	14
56	21
51	11
48	18
45	17
33	7
26	11
55	15
50	15
46	13
36	8
32	6
26	13

   

Use these data to compute the correlation between rating and the price per load.

       

(Use decimal notation. Give your answer to three decimal places.)

   

r =___

Answer 1

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