Draw a box-and-whisker plot that represents the data set in Example 1. What do you observe?

Data from Example 1

Each year in the U.S., automobile commuters waste fuel due to traffic congestion. The amounts (in gallons per year) of fuel wasted by commuters in the 15 largest U.S. urban areas are listed. (Large urban areas have populations of at least 3 million.) Find the first, second, and third quartiles of the data set. What do you observe?

20 30 29 22 25 29 25 24 35 23 25 11 33 28 35