Keywords: Virzis Formule.PNG Graphique montrant la progression des problèmes d'utilisabilité détectés dans le test utilisateur avec la formule de Virzi Transferred from http //en wikipedia org en wikipedia 2005-03-03 Original uploader was Schmettow at http //en wikipedia org en wikipedia Later version s were uploaded by NickVeys at http //en wikipedia org en wikipedia PD-AUTHOR; Released into the public domain by the author PD-author PD-release Original upload log page en wikipedia Virzis_Formula PNG 2005-07-12 22 22 NickVeys 518×413× 7832 bytes <nowiki>Chart showing the progress in detecting usability defects in usability testing with Virzi's binomial model</nowiki> 2005-03-03 13 33 Schmettow 518×413× 9930 bytes <nowiki>Chart showing the progress in detecting usability defects in usability testing with Virzi's binomial model</nowiki> Evaluation methods Tests Quality management Usability |