Quality Managers - np chart http://www.qualitymanagers.com/taxonomy/term/76/0 A control chart indicating the number of defective units in a given sample. en np chart http://www.qualitymanagers.com/np-chart <p>A control chart indicating the number of defective units in a given sample.</p> np chart Wed, 15 Nov 2006 17:18:54 -0500 joseph 56 at http://www.qualitymanagers.com