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The c Control Chart Under Inspection Error

Summary: The effects of inspection errors on the c chart, especially on the OC curves, are considered. Control limits based upon target values and those based upon historical data are both considered. An adjusted c chart is presented which provides OC curves under inspection errors which are close to those obtained under error-free inspection.

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  • Topics: Inspection, Statistical Process Control (SPC)
  • Keywords: Inspection error,Statistical process control (SPC),C chart (count chart)
  • Author: Suich, Ron
  • Journal: Journal of Quality Technology