Six Sigma

Six Sigma aims to have the total number of failures in quality, or customer satisfaction, occur beyond the sixth sigma of likelihood in a normal distribution of customers. Here sigma stands for a step of one standard deviation and corresponds in practice to fewer than 3.4 defects in one million.

That is, fewer than four in one million customers will have a legitimate issue with the company's products and service.

Many people believed that six-sigma quality was impossible, and settled for three to four sigmas. However market leaders have measurably reached six sigmas in numerous processes.

see also: product management, operations research, marketing, management

External links

• http://www.isssp.org International Society of Six Sigma Professionals
• http://www.isixsigma.com i Six Sigma