A statistics professor bought a new car for $35,000. For the next 5 years, she u

Question

A statistics professor bought a new car for $35,000. For the next 5 years, she used several automotive web pages to estimate the value of the car. She then found the least-squares regression line for the data to be y 35035.71 - 4142.86x. The correlation coefficient was-0.99. Would it be accurate to use this equation to predict the value of the car after 10 years? O No, because that would be extrapolation. O Yes, because the correlation is very strong. O No, because the value of cars is unpredictable over time.

Explanation / Answer

There is almost perfect negatve correlation between car price and x, thus B is the right answer

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