Fuel consumption is commonly measured in miles per gallon. The Environmental Protection Agency designed new fuel consumption

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Fuel consumption is commonly measured in miles per gallon. The Environmental Protection Agency designed new fuel consumption tests to be used starting with 2008 car models. Listed below are randomly selected amounts by which the measured MPG ratings decreased because of the new 2008 standards. For example, the first car was measured at 16 mi/gal under the old standards and 15 mi/gal under the new 2008 standards, so the amount of the decrease is 1 mi/gal. Is the decrease of 4 mi/gal unusual? Why or why not?

1 2 3 2 4 3 4 2 2 2 2 3 2 2 2 3 2 2 2 2


Find the range, variance, and standard deviation for the given sample data. Include appropriate units (such as “minutes”) in your results. (The same data were used in Section 3-2 where we found measures of center. Here we find measures of variation.) Then answer the given questions.

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Related Book For  answer-question

Elementary Statistics

ISBN: 9780321500243

11th Edition

Authors: Mario F. Triola

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