Nabila AliSP17-RST-006LHR TP 5324Dr. Tajammal Hussain2026-04-022018https://repository.cuilahore.edu.pk/handle/123456789/3155The mission to progress the quality and productivity of products and services is spreading across the industry and services sectors. Statistical process control (SPC) is a methodology to monitor an ongoing process and to identify unusual patterns and to indicate the need for correction. The most common SPC tools to be used are control charts. Control charts indicate whether or not the process is stable and resulting quality improvement. Control charts help to distinguish between special and common causes of variation which may occur during manufacturing process and influence the quality of a product.enDr. Tajammal Hussainsp17Department of StatisticsSOCIAL SCIENCES::Statistics, computer and systems science::StatisticsFuzzy X ̅-S ControlThesis