Quality Assurance vs Quality Control

Quality Assurance
Quality Control

Quality Assurance is process oriented and focuses on defect prevention, while quality control is product oriented and focuses on defect identification.

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Quality Assurance

Quality Control

Definition QA is a set of activities for ensuring quality in the processes by which products are developed. QC is a set of activities for ensuring quality in products. The activities focus on identifying defects in the actual products produced.
Focus on QA aims to prevent defects with a focus on the process used to make the product. It is a proactive quality process. QC aims to identify (and correct) defects in the finished product. Quality control, therefore, is a reactive process.
Goal The goal of QA is to improve development and test processes so that defects do not arise when the product is being developed. The goal of QC is to identify defects after a product is developed and before it's released.
How Establish a good quality management system and the assessment of its adequacy. Periodic conformance audits of the operations of the system. Finding & eliminating sources of quality problems through tools & equipment so that customer's requirements are continually met.
What Prevention of quality problems through planned and systematic activities including documentation. The activities or techniques used to achieve and maintain the product quality, process and service.
Responsibility Everyone on the team involved in developing the product is responsible for quality assurance. Quality control is usually the responsibility of a specific team that tests the product for defects.
Example Verification is an example of QA Validation/Software Testing is an example of QC
Statistical Techniques Statistical Tools & Techniques can be applied in both QA & QC. When they are applied to processes (process inputs & operational parameters), they are called Statistical Process Control (SPC); & it becomes the part of QA. When statistical tools & techniques are applied to finished products (process outputs), they are called as Statistical Quality Control (SQC) & comes under QC.
As a tool QA is a managerial tool QC is a corrective tool

Contents: Quality Assurance vs Quality Control

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Comments: Quality Assurance vs Quality Control

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March 27, 2014, 6:23pm

Thanks, now its very clear

— 106.✗.✗.225
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March 17, 2014, 9:09am

Thank you for a a very clear and concise delivery.

— 217.✗.✗.114
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February 20, 2014, 11:09am

Very good example and thanx..

— 70.✗.✗.218
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December 4, 2013, 4:24pm

Goof

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November 12, 2013, 2:32pm

Superb....

— 182.✗.✗.62
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October 16, 2013, 4:46pm

Very clear and easy to understand

— 173.✗.✗.1
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September 26, 2013, 3:37am

Thanx for such a helpful knowledge

— 120.✗.✗.147
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September 11, 2013, 9:07am

good.

— 168.✗.✗.101
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June 13, 2013, 4:17am

Thanks, It is very helpful to us.

— 203.✗.✗.6
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June 12, 2013, 11:35pm

Very good and clear definition. Thanks,

— 203.✗.✗.242
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May 25, 2013, 8:12am

it is a good information for us

— 202.✗.✗.202
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May 13, 2013, 7:15am

good info............

— 115.✗.✗.177
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June 26, 2012, 5:24am

QA is the think tank while QC is the doer

— 122.✗.✗.91
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February 8, 2012, 2:21am

thank you for the clear information :)

— 202.✗.✗.195
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November 13, 2011, 6:19pm

That sounds really good...!

— 116.✗.✗.57
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December 13, 2013, 5:09pm

Many thanks
Clear explanations

— 223.✗.✗.73
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November 27, 2013, 6:19pm

Really Informative

— 82.✗.✗.201
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November 17, 2013, 5:49am

Very Informative and useful

— 178.✗.✗.209
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