Six Sigma - What is it?

Hundreds of books have been written on this subject. It has changed organizational cultures and revolutionized the manufacturing industry. It is a source of revenue for thousands of consultants and consulting firms. It is an industry in and of it's self. For those who are not familiar with Six Sigma, the following paragraphs give you a brief overview.


The Six Sigma system is a way to improve processes in work and manufacturing and its main goal is to eliminate defects. The Six Sigma methodology has been widely used by many Fortune 500 corporations with amazing results and can be used in small groups to achieve goals or on a corporate level affecting tens of thousands of workers. The short definition of the Six Sigma system is a set of practices that improve efficiency and remove defects.

The Six Sigma system has been around for over 20 years and was built upon the TQM (total quality management) and Zero Defect principles. It strives to achieve high quality manufacturing and business processes by continued efforts to reduce variations.

The major methodology of Six Sigma states that in order to eliminate defects or variations, processes used in both business and manufacturing must be measured, analyzed, controlled and improved upon. In addition, Six Sigma requires a sustained commitment from a small group or an entire organization.

Six Sigma refers to a defect level of lower than 3.4 defects or variations per million opportunities. Its name and actions strive to achieve high quality output. The Six Sigma methodology has been extremely successful throughout the business world and has helped companies save billions of dollars through enhanced productivity and a reduction of defects. The Six Sigma system was originally started by Motorola and is a trademark of the Motorola Corporation.

For more information on Six Sigma, Wikipedia is a good starting point.