Executive leaders - They are the person who take the leadership of Six sigma, CEO, owner , promoter of Six Sigma throughout organization.

Champions - They have daya to day responsibility for business process being improved. They make sure the Six sigma project team has the required resources to execute their tasks.

Master Black belt - They address the most complex process improvement projects and provide guidelines and training to black belts and green belts.

Green belts - Greens belts assist black belts. They have enough knowledge of six sigma.They apply six sigma methodologies at bottom level to solve problems and improve process

Black belts - They work as team lead or project manager of project chosen for six sigma.Black belts selects projects and train resources, and implement it. They find out the variations and see how to minimize them.

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