The fuel efficiencies of 2007 models of midsized automobiles were studied.. The

Question

The fuel efficiencies of 2007 models of midsized automobiles were studied..

The fuel efficiencies of 2007 models of midsized automobiles were studied, and the side-by-side boxplots of the distribution of the miles per gallon in city driving (MPG-City) for automobiles manufactured in North America, Asia, and Europe are given below. From these boxplots we can see that Option IV: the overall variability in fuel efficiency rating is highest for European-built automobiles. Options I, II, and III are correct. Option III the median fuel efficiency rating is highest for automobiles manufactured in Asia. Option I: the MPG-City for 75% of automobiles from Asia is higher than the MPG-City for 75% of European automobiles. Option II: 75% of the cars from Asia have higher fuel efficiency than 50% of the cars from North America. all of the above are correct.

Explanation / Answer

Ans:

Options I,II,III are correct.

Option IV is incorrect,as overall variability is highest for asian built automobiles,as IQR(nterquartile range) is highest for Asian,which indicates highest variability.

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