Jayalath, JADUDAmarasinghe, ADUS2013-12-302013-12-3020082008http://dl.lib.mrt.ac.lk/handle/123/9703Statistical Process Control (SPC) is an indispensable methodological approach to implement Total Quality Management (TQM) in production processes. More generally, statistical thinking is becoming accepted as a necessary philosophy to reduce variation and thus improve quality and performance throughout the entire chain of marketing, development, production and sales processes. SPC is aimed at delivering high quality products to customers. It is a powerful problem solving technique used for monitoring, controlling, analyzing, managing and improving a process using statistical methods. In order to determine whether or not a process is in a state of statistical control, SPC uses astatistical tool called a control chart. This is a simple graph with three lines; the centerline represents the process mean, and the other two lines (called control lines or limits) represent the allowed process variability.enConference-Extended-Abstract2007ERU Research for industry27-28Proceeding of the 13th annual symposium