Six Sigma Improvement Methodologies

Six Sigma originated as a set of practices designed to improve manufacturing processes and eliminate defects, but its application was subsequently extended to other types of business processes as well. The operation of Six Sigma improvement involves the improvement project process and project management process.

Improvement Project Process is: Improvement Project Process is a rigorous 6-phase process that takes opportunities or problems through 20 steps to provide a measurable impact on the business.

Project Management Process is: The need to maintain discipline and progress during projects is essential and for this reason a project management process supports the project process.

This comprises project sponsorship and phase reviews to ensure all key phase activities have been performed and that the outcomes are acceptable.

Quantitative methods in process improvement – Six Sigma, deals exclusively with the application of Six Sigma to improve existing processes. It is published in the following two parts:

Part 1: DMAIC methodology, describes the five-phased methodology DMAIC (Define, Measure, Analyze, Improve, and Control), and recommends best practice, including on the roles, expertise, and training of personnel involved in such projects.

Part 2: Tools and techniques, describes tools and techniques, illustrated by factsheets, to be used at each phase of the DMAIC approach.

Sigma, is a statistical term that measures how far a given process deviates from perfection. The central idea behind Six Sigma is that by identifying the "defects" within a process, it then becomes possible to systematically eliminate them and move the process as close to "zero defects" as possible.

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