what is the basic difference between six sigma and lean six sigma 
lean six sigma uses the six sigma methodology define measure analyze improve control with the specific goal of eliminating waste in a company s or other organization s processes or use or materials that is making it leaner it derives in part from the principles of lean manufacturing the bottom linesix sigma has become a widely used quality improvement methodology in both the private and public sectors anyone who wishes to learn it can take courses that lead to various levels of certification 