An organization is always successful in its journey towards business excellence if it has specific goals for each of its critical processes. Various quality management programs adopted and implemented by such an organization can streamline the activities towards the ultimate goal of business excellence. When the quality improvement program is Six Sigma, the goal for the organization is obvious – to reach a sigma level of six, or the well-known objective of 3.4 defects per million opportunities (DPMO). An organization operating at that level is described by Six Sigma proponents as being world class.
Dr. Ravichandran J., “Using Weighted-DPMO to Calculate an Overall Sigma Level”, 2006.