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12 January 2016

Is it QA or QC? What’s the Difference?

David A. Zimmer Print

Is it QA or QC? What’s the Difference?

PMBOK® Guide Definition:

Quality Assurance (QA): The process of auditing the quality requirements and the results from quality control measurements to ensure the appropriate quality standards and operational definitions are used.

Quality Control (QC): The process of monitoring and recording results of executing the quality activities to assess performance and recommend necessary changes.

Practical Definition:

Quality Assurance (QA): The processes of comparing the project activity results against the Quality Plan requirements to determine if the outcomes are within the acceptable quality tolerance ranges and creating the plans to align out-of-spec results within the tolerance ranges.

Quality Control (QC): Monitoring the project work results to determine if they comply with the quality standards set out in the Quality Management Plan.


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