Elsevier Science, 2002. — 573 p.
Six Sigma is business and industries newest recognized quality program. It was developed at Motorola by their engineers to assist them in reducing their business and manufacturing costs, improving profitability, preventing problems, producing products to meet customer requirements, and knowing when and how much to adjust a process for repeatable operation. This is done to ensure their customer base continues to grow through their own initiated cost reductions while reducing the "Risk" of both business and product errors while continually achieving manufacturing improvements.