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For the period 2001-2008, the Bristol-Myers Squibb Company, Inc. reported the following amounts (in billions of dollars) for (1) net sales and (2) advertising and product promotion. The data are also in the fileXR02062. Source: Bristol-Myers Squibb Company, Annual Reports, 2005, 2008.
Year Net Sales Advertising/Promotion
2001 $16.612 $1.201
2002 16.208 1.143
2003 18.653 1.416
2004 19.380 1.411
2005 19.207 1.476
2006 16.208 1.304
2007 18.193 1.415
2008 20.597 1.550
For these data, construct a line graph that shows both net sales and expenditures for advertising/product promotion over time. Some would suggest that increases in advertis- ing should be accompanied by increases in sales. Does your line graph support this?
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