http://www.qualitymanagers.com/taxonomy/term/103/0 Control chart in which the standard deviation of the subgroup is tracked to determine the variation within a process over time. en http://www.qualitymanagers.com/sample-standard-deviation-chart-s-chart <p>Control chart in which the standard deviation of the subgroup is tracked to determine the variation within a process over time. Sample standard deviation charts are usually paired with average charts for complete analysis.</p> Sample Standard Deviation Chart Wed, 15 Nov 2006 16:31:13 -0500 joseph 29 at http://www.qualitymanagers.com