SPC is the primary and one of the best techniques for controlling and improving product or service quality methodically, which is applicable for any type of organization. It is a powerful tool of TQM that can clear the distinction between a stable process and an unstable process. It uses from Flow charts, Run charts, Pareto charts, Cause-and-effect diagrams, Frequency histograms, Scatter diagrams, Control charts, Acceptance sampling techniques and check sheets.
Process capability (CPk) is defined as the characteristics associated with the output of that process consistently conform to requirements.
Benefits
- A technique for improving quality,
- Effective in defect prevention,
- Prevents unnecessary process adjustments,
- Provides diagnostic information,
- Provides information about process capability.
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