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Six Sigma is a rigorous and proven business methodology that uses data and statistical analysis to improve business performance. With the goal of increasing profits by eliminating mistakes, waste, and rework, Six Sigma provides a means to identify and prevent process variation-or defects-to improve predictability and success of business processes.
Six Sigma certification confirms a level of training, practice, and capability with respect to specific competencies. Though requirements for each Six Sigma certification level are different, each requires training, and each participant, called a "Belt", is required to have a leadership-approved project prior to Six Sigma certification training.
Six Sigma Green Belts have received two weeks of training on the Six Sigma road map and essential elements of statistical methodologies supporting Six Sigma projects. Green Belts allocate up to 50% of their time on Six Sigma projects, and Black Belts assist them with projects as needed.
Six Sigma Black Belts are technical leaders who have received four weeks of training focusing on the Six Sigma road map and extensive statistical methodologies. Black Belts normally dedicate up to 75% of their time to Six Sigma projects, and they assist Green Belts as needed. Green Belt certification is required for Black Belt certification eligibility.