The company that has cars that are more consistent in highway fuel efficiency is Company B, as its data set has a smaller range and smaller standard deviation compared to Company A.
Company A:
{25, 27, 28, 29, 30, 31, 33, 35, 37, 38}
Range: 38 - 25 = 13
Mean: (25 + 27 + 28 + 29 + 30 + 31 + 33 + 35 + 37 + 38) / 10 = 31.3
Standard Deviation: 5.74
Company B:
{30, 31, 31, 32, 32, 33, 33, 34, 35, 36}
Range: 36 - 30 = 6
Mean: (30 + 31 + 31 + 32 + 32 + 33 + 33 + 34 + 35 + 36) / 10 = 32.7
Standard Deviation: 2.38
Based on the data, Company B has cars that are more consistent in highway fuel efficiency as indicated by the smaller range and standard deviation.
The following data sets represent the highway fuel efficiency in miles per gallon (mpg) of randomly selected cars from two car companies. Which company has cars that are more consistent in highway fue
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