Misuse and Abuse of Graphs Charts Misuse and Abuse of Graphs Charts Glen by fgv72030

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									 Misuse and Abuse
of Graphs & Charts
      Glen Whitman
    Dept. of Economics
           CSUN
   Beware of Pictograms:
America’s Expanding Waistline




                         Source:
                         Women’s Health,
                         May 2006
    Beware of Pictograms:
The Dominance of McDonald’s




Source: http://www.princeton.edu/~ina/infographics/starbucks.html
         Beware of Pictograms:
        The Growth of Starbucks




Source: http://www.princeton.edu/~ina/infographics/starbucks.html
   Slicing Up Pie Charts:
Rampant Illegal Downloading?


               1% slice = Estimated capacity of all
                          iPod capacity filled by
                          iTunes songs


               99% slice = Estimated capacity of all
                           iPod capacity not filled by
                           iTunes songs



                   Source: Wired, May 2006
Slicing Up Pie Charts:
 World Oil Reserves




                   Source: Business Week,
                   May 15, 2006
                   Slicing Up Pie Charts:
                    Compared to What?




Source: http://www.samefacts.com/archives/_/2006/06/pita_for_the_second_gilded_age.php
and http://agoraphilia.blogspot.com/2006/07/slicing-up-tax-pie.html
   Pay Attention to the Scale:
Are CSUN Professors Underpaid?




     Source: A flyer I found in the faculty mailroom
Pay Attention to the Scale:
Changing Marital Norms




    Source: Business Week, October 20, 2003
         Pay Attention to Scale:
         Weight Loss Products




Source: unknown magazine; same data displayed at
http://www.hydroxycut.com/MEN/PRODUCT_FACTS/HYD_24/index.shtml
Meaningless Line Graphs




   Source: Unknown, found in faculty mailroom

								
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