In any process a certain amount of variability can be found. Variability is defined as the tendency to vary. SPC identifies this variability and enhances an operators ability to control the process.

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Statistical Process Control (SPC) is a method used to monitor and control a process to ensure that it operates at its full potential. It identifies variability in processes, which is the natural tendency of process outputs to vary, and helps operators understand and control this variability to improve process performance.

In Any Process a Certain Amount of Variability Can Be