Relative frequency of errors among departmental web pages, by error type (2002)

Example of how to interpret the figures provided below: 92% of the 38 errors detected by Bobby among the UW-Superior departmental web pages involve missing ALT tags for images, and 8% of the detected errors involve missing frame titles.

• UW-Eau Claire
  
  Absolute number of errors: 172
  No alternative text for image: 77%
  No alternative text for image-map hot-spot(s): 8%
  No alternative text for APPLET: 2%
  Missing frame title: 13%
  Not readable/usable without frames-capable browsers: 1%
  
  
• UW-Green Bay
  
  Absolute number of errors: 555
  No alternative text for image: 82%
  No alternative text for image-map hot-spot(s): 16%
  No alternative text for APPLET: 2%
   
• UW-La Crosse
  
  Absolute number of errors: 676
  No alternative text for image: 77%
  No alternative text for image-map hot-spot(s): 10%
  No alternative text for APPLET: 9%
  Missing frame title: 4%
  
  
• UW-Madison
  
  Absolute number of errors: 387
  No alternative text for image: 83%
  No alternative text for image-map hot-spot(s): 13%
  Missing frame title: 3%
  Missing redundant text for server-side image-maps: 1%
  
  
• UW-Milwaukee
  
  Absolute number of errors: 651
  No alternative text for image: 93%
  No alternative text for image-map hot-spot(s): 3%
  No alternative text for APPLET: 2%
  Missing frame title: 2%
  
  
• UW-Oshkosh
  
  Absolute number of errors: 34
  No alternative text for image: 56%
  No alternative text for image-map hot-spot(s): 41%
  Missing frame title: 3%
  
  
• UW-Parkside
  
  Absolute number of errors: 197
  No alternative text for image: 82%
  No alternative text for image-map hot-spot(s): 5%
  No alternative text for APPLET: 2%
  Missing frame title: 11%
  Not readable/usable without frames-capable browsers: 1%
  
  
• UW-Platteville
  
  Absolute number of errors: 61
  No alternative text for image: 56%
  No alternative text for image-map hot-spot(s): 0%
  Missing frame title: 20%
  Not readable/usable without frames-capable browsers: 3%
  Missing redundant text for server-side image-maps: 2%
  
  
• UW-River Falls
  
  Absolute number of errors: 355
  No alternative text for image: 70%
  No alternative text for image-map hot-spot(s): 17%
  No alternative text for APPLET: 5%
  Missing frame title: 3%
  Missing redundant text for server-side image-maps: 5%
  
  
• UW-Stevens Point
  
  Absolute number of errors: 386
  No alternative text for image: 77%
  No alternative text for image-map hot-spot(s): 21%
  No alternative text for APPLET: 2%
  Missing frame title: 1%
  
  
• UW-Stout
  
  Absolute number of errors: 47
  No alternative text for image: 100%
  
  
• UW-Superior
  
  Absolute number of errors: 38
  No alternative text for image: 92%
  Missing frame title:  8%
  
  
• UW-Whitewater
  
  Absolute number of errors: 321
  No alternative text for image: 97%
  No alternative text for image-map hot-spot(s): 3%
  
  
• All of the above data combined
  
  Absolute number of errors: 3871
  No alternative text for image: 82.16%
  No alternative text for image-map hot-spot(s): 10.85%
  No alternative text for APPLET: 3.02%
  Missing frame title: 3.17%
  Not readable/usable without frames-capable browsers: .23%
  Missing redundant text for server-side image-maps: .57
  

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Created by Axel Schmetzke, Library, University of Wisconsin-Stevens Point.
Last updated 03/30/03 .
Comments are welcome! aschmetz@uwsp.edu