The price of living in the United States has increased dramatically in the past decade, as demonstrated by the consumer price indexes (CPIs) for housing and transportation. These CPIs are listed in the table for the years 1996 through the first five months of 2007.

a. Create side-by-side comparative bar charts to describe the CPIs over time.

b. Draw two line charts on the same set of axes to describe the CPIs over time.

c. What conclusions can you draw using the two graphs in parts a and b? Which is the most effective?

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Year 1997 1998 2001 1996 1999 2000 Housing 152.8 156.8 160.4 141.6 176.4 154.3 163.9 144.4 169.6 153.3 Transportation 143.0 144.3 Year 2002 2004 2003 2005 2006 2007 Housing Transportation 152.9 180.3 189.5 163.1 195.7 173.9 203.2 180.9 207.8 181.0 184.8 157.6