A statistics student is studying if there is a relationship Using the computer output, what is the correlation? between the price of a used car and the number of

miles it had been driven. She collects data for 20 cars

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of the same model with different mileage and

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determines each car's price using a used car website. 0.68

The analysis is given in the computer output.

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Predictor Coef SE Coeft-ratio

Constant 24157.2 2164.1 2.965 0.046

Mileage

-0.181 0.024 5.377 0.000

S = 3860.7 R-Sq = 68.0% R-Sq (Adi) = 67.5%