Statistical process control (SPC) is the application of statistical methods for the monitoring of process control of a process to ensure that it operates at its full potential to produce conforming product. Under SPC, a process behaves predictably to produce as much conforming product as possible with the least possible waste.
SPC is the primary analysis tool of quality improvement. It is the applied science that helps you collect, organize and interpret the wide variety of information available to your business. Whether you track revenues, billing errors, or the dimensions of manufactured components, SPC can help you measure, understand and control the variables that affect your business processes.
SPC analyzes the variation in whatever process you are measuring:
- First, control charts demonstrate how consistently your process is performing
- Next, the statistical process control chart compares the process performance to your customers’ requirements, providing a process capability index as an ongoing, accurate direction for quality improvement.
- Finally, control charts and its resulting process capability index quickly evaluate the results of quality initiatives designed to improve process performance