Shop stocking stuffers · Explore top gifts. Get Certified & Get Hired · No Enrolment Fees · Boost Your Resume · s Of Free CoursesCourses: Entrepreneurship, Management & HR, Engineering/Construction. Learn the basics of Six Sigma, a methodology for process improvement and statistical concept that reduces variation and defects. This book covers the history, tools, and applications of Six .Download free PDF guides for self-study certification in six sigma and lean six sigma at different belt levels. Learn the methodology, tools, and applications with examples and updates from the six sigma community. Lean Six Sigma is simply a process for solving a problem. It consists of five basic phases: Define, Measure, Analyze, Improve, and Control. This process is also known as DMAIC (pronounced “duh-may-ik”), its acronym. Lean and Six Sigma complement each other. Lean Six Sigma improves the efficiency of your organization by: Maximizing your organization’s efforts toward delivering a satisfactory* product or service to your customers.