Six Sigma Belts
Terms used to describe the level of expertise attained by a Six Sigma-trained professional. There are four "belt" levels:
1) Yellow Belt (YB) – the lowest level of Six Sigma expertise; applies to a professional who has a basic workingknowledge and who may manage smaller process improvement projects, but who does not function as a project or team leader;
2) Green Belt (GB) – in many organizations, Six Sigma's "entry level"; a Six Sigma-trained (and sometimes certified) professional who does notwork on Six Sigma projects exclusively, but whose duties include leading projects and teams and implementing Six Sigma methodology at the project level;
3) Black Belt (BB) – a Six Sigma-trained professional who has usually completed an examination and been certified in its methods; all job duties include implementation of Six Sigma methodology throughout all levels of the business, leading teams and projects, and providing Six Sigma training and mentoring to Green and YellowBelts; and
4) Master Black Belt (MBB) – the highest level of Six Sigma expertise; all duties involve implementationof Six Sigma, including statistical analysis, strategic and policy planning and implementation, and training and mentoring of Black Belts.
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