Statistical Process Control (SPC): It is commonly termed to as SPC, is a technique for monitoring, controlling, and enhancing a process via statistical analysis. The philosophy defines that all processes show natural variation, or arbitrariness. Though, sometimes processes show excessive variation which produces undesirable or unpredictable outcomes. In a manufacturing context, the less reliable and predictable a process is, the higher its costs are. SPC is employed to reduce variation and lower costs.