Six Sigma is a system for improving the quality of organizational processes. It was originally developed at in the 1980's and has become one of the m… - Peter S. Pande

So much has happened since the first publication of The Six Sigma Way, and it has been rewarding to find that much of what was in the book then still holds true. At the same time, the opportunity to reflect on how organizations have used, or misused, Six Sigma had offered a lot of new insights. We're pleased that this updated book will offer some real benefit to individuals and organizations still focused on driving continuous improvement today.”

The term "Six Sigma" is a reference to a particular goal of reducing defects to near zero. Sigma is the Greek letter statisticians use to represent the "standard deviation of a population." The sigma, or standard deviation, tells you how much variability there is within a group of items. In statistical terms,, therefore, the purposes of Six Sigma is to reduce variation to reduce variation to achieve very small standard variations so that almost all of your products or services meet or exceed customer expectations

Six Sigma has three basic parts, which are process improvement, process design/redesign, process management. These parts are important because these three parts affect your organization and the process that were established and are in use on a daily basis. Six Sigma teams when the project is focused on process improvement finds the critical Xs (causes) that create the unwanted Ys (defects) produced by the process.