Only those companies and organizations will survive and thrive in the fiercely competitive global marketplace, which can provide highest quality products and services at competitive prices. The negative consequences of not adopting six sigma are equally profound. Six sigma strategies aim at reducing the variance, and shifting the average in a favorable direction. When this is done, defects rates come tumbling down and all the benefits associated with six sigma accrue. All systems and transactions exhibit a certain amount of inherent variability no matter how well they are designed.
Inherent variability is worsened by causes that are discoverable.
This has to be done for every transactional process. The process map or product tree details all the subsystems and sheds light on problem areas, redundancies, and waste. They also shed light on what the potential impact factors are so that data may be taken on them in a subsequent phase. Data on the response variables are required to establish the current capability of the transactional process, so the extent of subsequent improvement from six sigma may be properly catalogued. It is impractical or impossible to analyze every product or transaction for defects.