Six sigma

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Six Sigma
 Six Sigma is a methodology that provides businesses with the tools to improve the capability of their business processes. This increase in performance and decrease in process variationleads to defect reduction and vast improvement in profits, employee morale and quality of product.
 Six Sigma is a rigorous and a systematic methodology that utilizes information (management byfacts) and statistical analysis to measure and improve a company's operational performance, practices and systems by identifying and preventing 'defects'.
 The goal of Six Sigma is to increase profits byeliminating variability, defects and waste that undermine customer loyalty.
http://www.isixsigma.com/index.php?option=com_glossary&id=77&Itemid=27

Six Sigma Companies
 Caterpillar Inc.
 Dell DHL
 DuPont
 Ford Motor Company
 General Electric
 HSBC Group
 LG Group
 Motorola
 PepsiCo
 Samsung Group
 Sears
 United States Air Force
 United States Army
 United StatesMarine Corps
 United States Navy

http://en.wikipedia.org/wiki/List_of_Six_Sigma_companies

Quality control is a process by which entities review the quality of all factors involved inproduction.
Quality control emphasizes testing of products to uncover defects, and reporting to management who make the decision to allow or deny the release, whereas quality assurance attempts to improveand stabilize production, and associated processes, to avoid, or at least minimize, issues that led to the defects in the first place.
http://en.wikipedia.org/wiki/Quality_control

Total QualityManagement (or TQM) is a management concept coined by W. Edwards Deming. The basis of TQM is to reduce the errors produced during the manufacturing or service process, increase customer satisfaction,streamline supply chain management, aim for modernization of equipment and ensure workers have the highest level of training. One of the principal aims of TQM is to limit errors to 1 per 1 million...
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