Lean Six Sigma Green Belt Certification
Exam Practice Questions And Correct
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Rationale 2026 Q&A| Instant Download
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1.Which statement best describes the primary objective of Lean Six Sigma
methodology in an organizational environment?
A. Increasing production speed regardless of quality concerns
B. Eliminating all employees’ decision-making responsibilities
C. Reducing process variation and waste while improving customer value
D. Replacing traditional management systems with automated technology
Correct Answer: C
Lean Six Sigma focuses on improving process performance by reducing
defects, minimizing waste, controlling variation, and increasing value
delivered to customers through data-driven improvement methods.
2. The DMAIC framework used in Lean Six Sigma stands for which
sequence of improvement phases?
A. Define, Measure, Analyze, Improve, Control
B. Design, Monitor, Assess, Implement, Calculate
C. Develop, Manage, Apply, Integrate, Correct
D. Determine, Modify, Approve, Inspect, Confirm
,Correct Answer: A
DMAIC is the core problem-solving structure of Six Sigma projects, guiding
teams from identifying the problem through sustaining improvements.
3. In the Define phase of DMAIC, which document is commonly created
to clarify project scope, objectives, stakeholders, and business
justification?
A. Control chart
B. Project charter
C. Fishbone diagram
D. Process capability report
Correct Answer: B
A project charter establishes the foundation of a Lean Six Sigma project by
defining goals, boundaries, resources, expected benefits, and
responsibilities.
4. Which Lean principle focuses on identifying activities that do not add
value from the customer’s perspective?
A. Standardization
B. Waste elimination
C. Statistical sampling
D. Process automation
Correct Answer: B
Lean methodology emphasizes identifying and removing non-value-added
activities, known as waste, to improve efficiency and customer
satisfaction.
5. Which of the following is considered one of the eight wastes identified
in Lean thinking?
,A. Innovation
B. Transportation
C. Customer satisfaction
D. Strategic planning
Correct Answer: B
Transportation is a Lean waste because unnecessary movement of
materials or products increases cost without adding customer value.
6. A Six Sigma process operating at a 6-sigma level is generally associated
with approximately how many defects per million opportunities?
A. 34 defects per million opportunities
B. 3.4 defects per million opportunities
C. 340 defects per million opportunities
D. 0.34 defects per million opportunities
Correct Answer: B
A Six Sigma process traditionally represents approximately 3.4 defects per
million opportunities when accounting for long-term process variation.
7. Which tool is most appropriate for visually identifying possible causes
of a problem?
A. Pareto chart
B. Histogram
C. Fishbone diagram
D. Scatter plot
Correct Answer: C
A fishbone diagram, also called an Ishikawa diagram, organizes potential
root causes into categories to support systematic problem analysis.
8. The Voice of the Customer (VOC) is primarily used to determine:
, A. Employee performance ratings
B. Customer needs and expectations
C. Equipment maintenance schedules
D. Financial reporting requirements
Correct Answer: B
VOC information helps organizations understand customer requirements
and translate them into measurable process improvement goals.
9. Which phase of DMAIC involves collecting baseline performance data
about the current process?
A. Define
B. Measure
C. Improve
D. Control
Correct Answer: B
The Measure phase establishes current process performance using reliable
data before improvements are designed.
10. A SIPOC diagram is mainly used during which DMAIC phase?
A. Define
B. Improve
C. Control
D. Validate
Correct Answer: A
A SIPOC diagram provides a high-level overview of Suppliers, Inputs,
Process, Outputs, and Customers, helping define project boundaries.
11. In Lean Six Sigma, a value-added activity is one that:
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1.Which statement best describes the primary objective of Lean Six Sigma
methodology in an organizational environment?
A. Increasing production speed regardless of quality concerns
B. Eliminating all employees’ decision-making responsibilities
C. Reducing process variation and waste while improving customer value
D. Replacing traditional management systems with automated technology
Correct Answer: C
Lean Six Sigma focuses on improving process performance by reducing
defects, minimizing waste, controlling variation, and increasing value
delivered to customers through data-driven improvement methods.
2. The DMAIC framework used in Lean Six Sigma stands for which
sequence of improvement phases?
A. Define, Measure, Analyze, Improve, Control
B. Design, Monitor, Assess, Implement, Calculate
C. Develop, Manage, Apply, Integrate, Correct
D. Determine, Modify, Approve, Inspect, Confirm
,Correct Answer: A
DMAIC is the core problem-solving structure of Six Sigma projects, guiding
teams from identifying the problem through sustaining improvements.
3. In the Define phase of DMAIC, which document is commonly created
to clarify project scope, objectives, stakeholders, and business
justification?
A. Control chart
B. Project charter
C. Fishbone diagram
D. Process capability report
Correct Answer: B
A project charter establishes the foundation of a Lean Six Sigma project by
defining goals, boundaries, resources, expected benefits, and
responsibilities.
4. Which Lean principle focuses on identifying activities that do not add
value from the customer’s perspective?
A. Standardization
B. Waste elimination
C. Statistical sampling
D. Process automation
Correct Answer: B
Lean methodology emphasizes identifying and removing non-value-added
activities, known as waste, to improve efficiency and customer
satisfaction.
5. Which of the following is considered one of the eight wastes identified
in Lean thinking?
,A. Innovation
B. Transportation
C. Customer satisfaction
D. Strategic planning
Correct Answer: B
Transportation is a Lean waste because unnecessary movement of
materials or products increases cost without adding customer value.
6. A Six Sigma process operating at a 6-sigma level is generally associated
with approximately how many defects per million opportunities?
A. 34 defects per million opportunities
B. 3.4 defects per million opportunities
C. 340 defects per million opportunities
D. 0.34 defects per million opportunities
Correct Answer: B
A Six Sigma process traditionally represents approximately 3.4 defects per
million opportunities when accounting for long-term process variation.
7. Which tool is most appropriate for visually identifying possible causes
of a problem?
A. Pareto chart
B. Histogram
C. Fishbone diagram
D. Scatter plot
Correct Answer: C
A fishbone diagram, also called an Ishikawa diagram, organizes potential
root causes into categories to support systematic problem analysis.
8. The Voice of the Customer (VOC) is primarily used to determine:
, A. Employee performance ratings
B. Customer needs and expectations
C. Equipment maintenance schedules
D. Financial reporting requirements
Correct Answer: B
VOC information helps organizations understand customer requirements
and translate them into measurable process improvement goals.
9. Which phase of DMAIC involves collecting baseline performance data
about the current process?
A. Define
B. Measure
C. Improve
D. Control
Correct Answer: B
The Measure phase establishes current process performance using reliable
data before improvements are designed.
10. A SIPOC diagram is mainly used during which DMAIC phase?
A. Define
B. Improve
C. Control
D. Validate
Correct Answer: A
A SIPOC diagram provides a high-level overview of Suppliers, Inputs,
Process, Outputs, and Customers, helping define project boundaries.
11. In Lean Six Sigma, a value-added activity is one that:
