8
QuizMultiple Choice

Calculating the Least-Squares Regression Line

Question 8 • DRHS GA-Statistical Reasoning

A statistics student is studying if there is a relationship between the price of a used car and the number of miles it had been driven. She collects data for 20 cars of the same model with different mileage and determines each car’s price using a used car website. The analysis is given in the computer output.PredictorCoefSE Coeft-ratiopConstant24157.22164.12.9650.046Mileage-0.1810.0245.3770.000S = 3860.7R-Sq = 68.0%R-Sq(Adj) = 67.5%

Answer
A
–0.82
B
–0.68
C
0.68
D
0.82
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A statistics student is studying if there is a…