What is Six Sigma?
Six Sigma is a set of practices originally developed by Motorola to systematically improve processes by eliminating defects.
(A defect is defined as nonconformity of a product or service to its specifications. |
Six Sigma asserts the following:
 1- Continuous efforts to reduce variation in process outputs are key to business success.
2- Succeeding at achieving sustained quality improvement requires commitment from the entire organization, particularly from top-level management.
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The core of the Six Sigma methodology is a data-driven, systematic approach to problem solving, with a focus on customer impact. Statistical tools and analysis are often useful in the process. It is a mistake, however, to view the core of the Six Sigma methodology as statistics; an acceptable Six Sigma project can be started with only rudimentary statistical tools.
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Methodology
Six Sigma has two key methodologies: DMAIC and DMADV. DMAIC is used to improve an existing business process, and DMADV is used to create new product or process designs for predictable, defect-free performance. |
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