CHNS Internet Challenge

What is the difference between "quality assurance" and "quality control"?

Courtesy of GE Capital Services
Using Advanced Search Features and Dogged Determination

AltaVista: +"quality assurance" +"quality control"
    More than 52,000 pages found! So must be closely coupled...
    Found dedicated sites:, Quality Assurance Consulting, but no good answers.

AltaVista: +"quality assurance" +"quality control" +host:edu
    Trying to find a course; still 6500 pages available...
    Third page: PowerPoint presentation titled "Quality Assurance and Quality Control" at the School of Chemistry, Univ. of New South Wales
    On second slide found a reference to "ISO8402 Quality Vocabulary"

AltaVista: +"ISO8402" +"quality assurance" +"quality control"
    Five pages found -- finally the payoff!
    Project Management Glossary - Q from the Project Management Forum
    Eight definitions of quality, Editor's Choice is from ISO8402:

The totality of features and characteristics of a product or service that bear on its ability to satisfy stated or implied needs.
    Ten definitions of quality assurance, Editor's Choice is from ISO8402:
All those planned and systematic actions necessary to provide adequate confidence that a product or service will satisfy given requirements for quality.
    Eight definitions of quality control, From ISO8402:
The operational techniques and activities that are used to fulfill requirements for quality.

Editor's Choice from Welcom - Glossary:

The process of monitoring specific project results to determine if they comply with relevant standards and identifying ways to eliminate causes of unsatisfactory performance.

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Last updated February 17, 2000.
© George Watson, Univ. of Delaware, 2000.