Any Business to run should have process and where there is a process there is a variation, now six sigma comes into picture to control the variations and eliminate non value addition in process. So the answer is yes six sigma can be applied for any field/business.
Hi John, Black belt Project will lead to major Business impact, Strategic Decisions which will be executed & Implemented at the Business unit level. whereas In Green belt project the impact is less and pertaining to a process. Regards Harsha