As a subject matter expert in quality management, I can explain that Six Sigma is a set of techniques and tools for process improvement. It was developed by Motorola in 1986 to minimize defects in manufacturing and production. The term "Six Sigma" refers to the goal of six standard deviations between the process mean and the nearest specification limit. This translates to just 3.4 defects per million opportunities, which is an extremely high level of quality.

The methodology is based on a rigorous data-driven approach and statistical analysis to measure, analyze, and improve the quality of a process. It involves a structured and collaborative approach that includes defining the problem, measuring the current process, analyzing the data, improving the process, and controlling the new process to prevent backsliding.

Six Sigma also includes a belt system similar to martial arts, with different levels of expertise such as Yellow Belt, Green Belt, Black Belt, and Master Black Belt, each signifying a different level of training and responsibility in the Six Sigma methodology.

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Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (driving toward six standard deviations between the mean and the nearest specification limit) in any process �C from manufacturing to transactional and from product to service.read more >>