Six Sigma means a measure of quality that strives for near perfection. It is a disciplined, data-driven approach and methodology for eliminating defects in any process – from manufacturing to service.

Applying Six Sigma in industry was first started by Motorola under Bill Smith, who is the "Father of Six Sigma". Since then, it has been adopted by other industries.

To know the history of Six Sigma, please visit the link www.todaysengineer.org/2010/dec/six-sigma.asp.

To gain more insight on Six Sigma and to know details about six sigma, a series of six sigma training videos can be very much helpful. The link is as follows:
www.youtube.com/playlist?list=PL3D98E66536D87B7C