Six Sigma is a method of improvement of statistics-based process to reduce the rate of errors or defects to levels 3.4 errors per million likely to cause an error by identifying and eliminating the sources that create oscillations (volatility) in the business process. In the definition of defects, Six Sigma focuses on establishing the thorough understanding of customer requirements and thus have very high customer oriented.
đang được dịch, vui lòng đợi..