Abstract
In Chapter 6, we discussed the lean concept and how it can be used to eliminate waste and create value for the customer. In this chapter, we present the concept of Six Sigma, which is aimed at reducing process variation and improving accuracy. Lean and Six Sigma (or as some call it, Lean Sigma) are often considered linked by people working on quality improvement projects. The goal of Six Sigma is to eliminate process variations, thereby achieving predictability.