We are interested in exploring the relationship between the weight of a vehicle and its fuel...

Weight	Fuel Efficiency
2670	25
2570	24
2630	29
2760	38
3000	25
3410	24
3640	21
3700	26
3880	21
3900	18
4060	18
4710	17

Find the correlation coefficient.

Find the equation of the best fit line. (Round your answers to four decimal places.)

What percent of the variation in fuel efficiency is explained by the variation in the weight of the vehicles, using the regression line? (Round your answer to the nearest whole number.

For the vehicle that weighs 3000 pounds, find the residual

(y − ŷ).

(Round your answer to two decimal places.)

Remove the outlier from the sample data. Find the new correlation coefficient and coefficient of determination. (Round your answers to two decimal places.)

correlation coefficient
coefficient of determination	Find the new best fit line. (Round your answers to four decimal places.)

Solutions

Expert Solution

The correlation between weight and fuel efficiency is -0.73. i.e. Fuel efficiency and weight is moderately negatively correlated.

orchestra answered 1 year ago

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