Quality control

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Quality control (QC) is the process relating to gathering process data and analyzing the data to determine whether the process exhibits nonrandom variation.

Definition

According to Managing Quality by Foster (6th edition),

Quality control (QC). The process relating to gathering process data and analyzing the data to determine whether the process exhibits nonrandom variation.

According to Juran's Quality Handbook by Defeo (7th edition),

Quality control. A universal managerial process for conducting operations so as to provide stability over time, and to prevent adverse change and to maintain the status quo. Quality control takes place by use of the feedback loop. Quality control entails the maintenance or restoration of the operating status quo as measured by (meeting) the acceptable level of defects and provision of customer needs.