Answered: Here are 3 boxplots of weekly gas…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Here are 3 boxplots of weekly gas prices at a service station in the United States (price in $ per gallon). Compare the distribution of prices over the three years.

Choose the best answer below:

A. Gas price have been increasing on average over the 3-year period, but the spread has been decreasing. The distribution has been skewed to the left, and there were 3 high outliers in 2005.

B. Gas price have been increasing on average over the 3-year period, and the spread has been increasing as well. The distribution has been skewed to the left, and there were 3 high outliers in 2005.

C. Gas price have been increasing on average over the 3-year period, and the spread has been increasing as well. The distribution has been skewed to the right, and there were 3 high outliers in 2005.

D. Gas price have been decreasing on average over the 3-year period, and the spread has been decreasing. The distribution has been skewed to the left, and there were 3 high outliers in 2005.

E. Gas price have been decreasing on average over the 3-year period, but the spread has been increasing. The distribution has been skewed to the right, and there were 3 high outliers in 2005.