http://www.qualitymanagers.com/taxonomy/term/1/0 Based on the proven 80/20 rule: 20% of the sources cause 80% of any problems. en http://www.qualitymanagers.com/80-20-rule <p>Based on the proven 80/20 rule: 20% of the sources cause 80% of any problems.</p> 80/20 rule Wed, 15 Nov 2006 12:36:54 -0500 joseph 2 at http://www.qualitymanagers.com