Perform Quality Control Process

Posted on June 15, 2009 by


The Perform Quality Control process is one of the 42 project management processes described in the fourth edition PMBOK®. It’s one of the three Quality knowledge area processes, and one of the ten Monitoring and Controlling processes.

The primary purpose of this process is to monitor the results of the quality activities so that any needed changes can be made. The Quality Management Plan, which is found in the Project Management Plan, is used to guide this process. The Plan Quality process provides Quality Metrics and Quality Checklists to be used in this process. Information about that actual work that is compared to the pre-determined quality standards is found from Work Performance Measurements and Deliverables. Also, performance data is gathered through the tools of Statistical Sampling and Inspection. A better understanding of the causes of defects can be accomplished through Cause and Effect Diagrams. Once data is gathered, it can be displayed in a variety of ways, including: Control Charts, Flowcharts, Histograms, Pareto Charts, Run Charts, and Scatter Diagrams. The outcome of these measures are Quality Control Measurements. The data is not simply displayed, however—it must be assessed to determine whether or not it demonstrates that quality standards are being met. If the quality is not acceptable, a Change Request will be made. If the deliverables are acceptable, the output of Validated Deliverables goes to the Verify Scope process for final approval. Also see the earlier postings of PMP Exam – Pareto Chart (posted February 9, 2009), Scatter Diagram (posted February 10, 2009), Run Chart (posted February 16, 2009), Control Chart (posted February 17, 2009), Change Requests (posted May 11, 2009), and Statistical Sampling (posted June 5, 2009).