In short: Yellow, Green, Black: what each Lean Six Sigma level means and how to choose your next step.
Lean Six Sigma combines the waste-elimination focus of Lean with the variation-reduction methods of Six Sigma. Competence is usually described using a belt system.
Green Belt
Green Belts lead small to medium improvement projects, usually part-time alongside their normal role. They apply the DMAIC method (Define, Measure, Analyse, Improve, Control), Lean tools and basic statistics.
Black Belt
Black Belts lead complex, cross-functional projects and coach Green Belts. They use advanced statistical tools, such as hypothesis testing, regression and design of experiments.
How to choose
- New to improvement projects? Start with Green Belt.
- Leading an improvement programme or mentoring others? Consider Black Belt.