Control Charts

Control Charts are a powerful statistical tool that may have many different applications. For example, they may be used to monitor key product variables and process parameters. They may also be used in the maintenance of process control and in the identification of special and common causes of variation. In addition, they may also be used for process improvement by showing the effects of process of change.


Difficulties associated with Control Charts:

In addition, people get confused between “control” and “capability”. A process can be in control and not capable. "Control" means that the process is stable. "Capable" means “within specification”. People also focus on “product” and not “process”. Control Charting is a process improvement tool not a quality control or conformance to specification tool.

Overcoming the difficulties:

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