Six Sigma
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Publicado: 7 de diciembre de 2012
Six Sigma is a process improvement set of tools and strategies, originally developed by Motorola in 1986.[1][2] Six Sigma became well known after Jack Welch made it a central focus of his businessstrategy at General Electric in 1995,[3] and today it is used in different sectors of industry.[4]
Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes ofdefects (errors) and minimizing variability in manufacturing and business processes.[5] It uses a set of quality management methods, including statistical methods, and creates a special infrastructureof people within the organization ("Champions","Black Belts", "Green Belts","Orange Belts", etc...) who are experts in these very complex methods.[5] Each Six Sigma project carried out within anorganization follows a defined sequence of steps and has quantified financial targets (cost reduction and/or profit increase).[5]
The term Six Sigma originated from terminology associated withmanufacturing, specifically terms associated with statistical modeling of manufacturing processes. The maturity of a manufacturing process can be described by a sigma rating indicating its yield or thepercentage of defect-free products it creates. A six sigma process is one in which 99.99966% of the products manufactured are statistically expected to be free of defects (3.4 defects per million),although, as discussed below, this defect level corresponds to only a 4.5 sigma level. Motorola set a goal of "six sigma" for all of its manufacturing operations, and this goal became a byword for themanagement and engineering practices used to achieve it.
Like its predecessors, Six Sigma doctrine asserts that:
Continuous efforts to achieve stable and predictable process results (i.e., reduce processvariation) are of vital importance to business success.
Manufacturing and business processes have characteristics that can be measured, analyzed, improved and controlled.
Achieving sustained...
Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes ofdefects (errors) and minimizing variability in manufacturing and business processes.[5] It uses a set of quality management methods, including statistical methods, and creates a special infrastructureof people within the organization ("Champions","Black Belts", "Green Belts","Orange Belts", etc...) who are experts in these very complex methods.[5] Each Six Sigma project carried out within anorganization follows a defined sequence of steps and has quantified financial targets (cost reduction and/or profit increase).[5]
The term Six Sigma originated from terminology associated withmanufacturing, specifically terms associated with statistical modeling of manufacturing processes. The maturity of a manufacturing process can be described by a sigma rating indicating its yield or thepercentage of defect-free products it creates. A six sigma process is one in which 99.99966% of the products manufactured are statistically expected to be free of defects (3.4 defects per million),although, as discussed below, this defect level corresponds to only a 4.5 sigma level. Motorola set a goal of "six sigma" for all of its manufacturing operations, and this goal became a byword for themanagement and engineering practices used to achieve it.
Like its predecessors, Six Sigma doctrine asserts that:
Continuous efforts to achieve stable and predictable process results (i.e., reduce processvariation) are of vital importance to business success.
Manufacturing and business processes have characteristics that can be measured, analyzed, improved and controlled.
Achieving sustained...
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