Which of the following are three levels of training in the Six Sigma quality system?

A. Blue Belts
B. Yellow Belts
C. Black Belts
D. Red Belts
E. Green Belts

Choose the most appropriate answer from the options given below:

Correct option is D

​Introduction:

In the Six Sigma quality system, a structured hierarchy of roles (often referred to as "belts") represents different levels of expertise, training, and responsibility. The recognized core training levels are:

• B. Yellow Belts: These individuals have basic training in Six Sigma tools and assist with data collection and minor project tasks. They support Green and Black Belts.

• C. Black Belts: Highly trained professionals responsible for executing Six Sigma projects, leading problem-solving initiatives, and mentoring others. They are experts in DMAIC methodology.

• E. Green Belts: These employees receive intermediate training in Six Sigma and usually work on projects part-time under the guidance of Black Belts.

These belts represent a formal structure of training and role-based contributions within the Six Sigma methodology. They reflect a globally recognized system used in quality management and operational excellence.

Information Booster:

• Yellow Belt: Entry-level certification; supports project teams with data gathering and process understanding.

• Green Belt: Works on projects within their functional areas; trained in problem-solving tools and statistical analysis.

• Black Belt: Leads large-scale process improvement projects; expert in Six Sigma tools and techniques like DMAIC and statistical methods.

• These training levels ensure a layered, collaborative approach to solving quality issues.

• Six Sigma uses data-driven decision-making, and belt-level training ensures the right expertise at each project stage.

• Training improves process efficiency, reduces variation, and enhances customer satisfaction.

• Organizations may also have Master Black Belts (trainers/strategists) and Champions (executives), but Yellow, Green, and Black Belts form the core execution team.

  Additional Knowledge:
  

A. Blue Belts:
This is not a formally recognized training level in Six Sigma. Some companies may use it informally to refer to non-certified team members, but it’s not part of the standard Six Sigma belt system.

D. Red Belts:
Not part of Six Sigma methodology. This term may be found in martial arts or unrelated disciplines, but it has no recognized role or training function within the Six Sigma quality framework.