Definition
Refers to a five-step approach (also called DMAIC cycle) that improves quality by analysing, measuring, improving and monitoring processes and operations, preferably by statistical means. The challenging objective is to achieve such a level of quality that only 3.4 errors occur per one million error possibilities. The "sigma level" can be determined from the number of errors and compared to the error costs. To achieve Six Sigma, the existing processes are improved in a structured way with the help of standardised methods and the success of the process improvement is continuously measured with statistical methods with regard to errors that still occur. The application requires appropriate, staged training, e.g. Green Belt.
Bettina Dirks
