Mukhopadhyay, Arup RanjanRay, Soumik2011-09-232011-09-232006Quality Engineering, v.18, no.2, p.189-206http://hdl.handle.net/10263/2645enSix sigma case studyTextile industryLength measuring deviceTwo-for-one twisterCount of yarnPareto chartDefects per unitTest of hypothesisGage capabilityRepeatabilityRegression analysisPrediction intervalReduction of yarn packing defects using six sigma methods : a case studyArticle