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Comparing Accessibility Metrics: A Zero in eChecker Equals Ten in eXaminator

This presentation at the RDWG Symposium on Website Accessibility Metrics discusses the comparison between two accessibility metrics, eChecker and eXaminator, based on their scores. Through analysis of 1 million pages and user feedback from Portugal and Brazil, we examine the reliability of these accessibility tests. Have we created a 'Dow Jones' index for accessibility? The preliminary results from comparing these validators raise important questions about their effectiveness and reliability. Join us as we delve into the nuances of web accessibility metrics.

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Comparing Accessibility Metrics: A Zero in eChecker Equals Ten in eXaminator

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  1. A zero in eChecker equals 10 in eXaminator: a comparison between two metrics by their scores RDWG Symposium on Website Accessibility Metrics As the stock market uses the "Dow Jones" index... why not an index of accessibility? web@x: web at eXaminator

  2. What about the reliability of tests? Are they good? A zero in eChecker equals 10 in eXaminator: a comparison between two metrics by their scores RDWG Symposium on Website Accessibility Metrics • 1 million pages analysed • hundreds of users in Portugal and Brazil • used in dozens of projects as an element for supporting the development work

  3. What happens when eXaminator is compared with other validators? A zero in eChecker equals 10 in eXaminator: a comparison between two metrics by their scores RDWG Symposium on Website Accessibility Metrics • In 2009 we tried to update Walidator (UWEM 1.2) with the same tests as eGovMon checker's, trying to compare test by test; • Preliminary results with Portuguese Municipalties were frustrating • The analyses by score, as you could see, aren't very conclusive either

  4. WCAG 2.0 – AccessMonitorwww.acesso.umic.pt/accessmonitor A zero in eChecker equals 10 in eXaminator: a comparison between two metrics by their scores RDWG Symposium on Website Accessibility Metrics Different formulas: True: if(C==True) R=G*P False: if(C==False) R=G*P Proportional: R=(G-((G/E)*C))*P Decreasing: R=(G-((C-T)/F))*P References: R: Result E: Element C: Instance G: Grade P: Weight (Value*Trust) T: Tolerance F: Fraction

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