How much time do Americans living in or near cities spend waiting in traffic, and how much does waiting in traffic cost them per year? The data in the file Congestion include this cost for 31 cities. (Source: Data extracted from “The High Cost of Congestion, ”Time, October 17, 2011, p. 18.) For the time Americans living in or near cities spend waiting in traffic and the cost of waiting in traffic per year,
a. Construct a percentage histogram.
b. Construct a cumulative percentage polygon.
c. What conclusions can you reach concerning the time Americans living in or near cities spend waiting in traffic?
d. What conclusions can you reach concerning the cost of waiting in traffic per year?