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Author Question: In a comprehensive road test on new car models, one variable measured is the time it takes the car ... (Read 74 times)

tiara099

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Question 1

Consider the following pairs of observations:

x23556
y1.31.62.12.22.7

Find and interpret the value of the coefficient of determination.

Question 2

In a comprehensive road test on new car models, one variable measured is the time it takes the car to accelerate from 0 to 60 miles per hour. To model acceleration time, a regression analysis is conducted on a random sample of 129 new cars.

TIME60:y = Elapsed time (in seconds) from 0 mph to 60 mph
MAXx = Maximum speed attained (miles per hour)

The simple linear model E(y) = β0 + β1x was fit to the data. Computer printouts for the analysis are given below:

NWEIGHTED LEAST SQUARES LINEAR REGRESSION OF TIME60







CASES INCLUDED 129   MISSING CASES 0

Approximately what percentage of the sample variation in acceleration time can be explained by the simple linear model?
◦ 70%
◦ 8%
◦ -17%
◦ 0%


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Marked as best answer by tiara099 on Feb 14, 2020

briseldagonzales

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tiara099

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Reply 2 on: Feb 14, 2020
Great answer, keep it coming :)


Joy Chen

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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