How much time do commuters living in or near cities spend commuting to work each week? The file CommutingTime contains the average weekly commuting time in 30 U.S. cities.

Source: Data extracted from New York City Economics Brief, March 2015, p. 3.

For the weekly commuting time data:

a. Compute the mean, median, first quartile, and third quartile.

b. Compute the range, interquartile range, variance, standard deviation, and coefficient of variation.

c. Construct a boxplot. Are the data skewed? If so, how?

d. Based on the results of (a) through (c), what conclusions might you reach concerning the commuting time.