Six Sigma Green Belt Exam Practice Questions (1–100)
1. What is the primary goal of Six Sigma methodology?
A. Increase employee workload
B. Reduce process variation and improve quality
C. Eliminate all employees from processes
D. Increase production speed regardless of defects
Correct Answer: B. Reduce process variation and improve quality
Rationale: Six Sigma focuses on improving processes by reducing defects,
minimizing variation, and increasing customer satisfaction.
2. What does DMAIC stand for?
A. Define, Measure, Analyze, Improve, Control
B. Develop, Manage, Assess, Implement, Create
C. Design, Measure, Improve, Analyze, Control
D. Define, Monitor, Inspect, Adjust, Correct
Correct Answer: A. Define, Measure, Analyze, Improve, Control
Rationale: DMAIC is the structured Six Sigma problem-solving framework used
for improving existing processes.
3. Which Six Sigma phase identifies the problem and defines project goals?
A. Measure
B. Analyze
C. Define
D. Control
Correct Answer: C. Define
,Rationale: The Define phase establishes the problem statement, project scope,
customer requirements, and objectives.
4. What is the role of a Six Sigma Green Belt?
A. Lead all company operations
B. Support improvement projects and apply Six Sigma tools
C. Replace senior management
D. Approve all financial decisions
Correct Answer: B. Support improvement projects and apply Six Sigma tools
Rationale: Green Belts typically work on improvement projects while applying
Six Sigma methods and tools.
5. What does VOC represent in Six Sigma?
A. Value of Customers
B. Voice of Customer
C. Variation of Control
D. Volume of Costs
Correct Answer: B. Voice of Customer
Rationale: VOC represents customer needs, expectations, and requirements that
guide process improvements.
6. A CTQ characteristic is:
A. A financial report
B. A Critical To Quality requirement important to customers
C. A production schedule
D. A management strategy
Correct Answer: B. A Critical To Quality requirement important to customers
,Rationale: CTQs translate customer expectations into measurable requirements.
7. Which tool visually shows the steps in a process?
A. Histogram
B. Process map
C. Scatter plot
D. Control chart
Correct Answer: B. Process map
Rationale: Process maps display activities, decisions, and workflow sequences.
8. What does a SIPOC diagram represent?
A. Suppliers, Inputs, Process, Outputs, Customers
B. Systems, Information, Planning, Operations, Control
C. Suppliers, Inspection, Production, Output, Cost
D. Standards, Improvement, Process, Organization, Customers
Correct Answer: A. Suppliers, Inputs, Process, Outputs, Customers
Rationale: SIPOC provides a high-level overview of a process and identifies key
stakeholders.
9. Which phase of DMAIC focuses on collecting and analyzing current process
data?
A. Define
B. Measure
C. Improve
D. Control
Correct Answer: B. Measure
, Rationale: The Measure phase establishes baseline performance using reliable
data.
10. What is a defect in Six Sigma terminology?
A. A product or service that fails to meet customer requirements
B. A highly efficient process
C. A customer compliment
D. A process improvement idea
Correct Answer: A. A product or service that fails to meet customer
requirements
Rationale: A defect occurs when an output does not meet specified requirements.
11. What is the purpose of a Pareto chart?
A. Show relationships between variables
B. Identify the most significant causes of problems
C. Measure process variation over time
D. Display process steps
Correct Answer: B. Identify the most significant causes of problems
Rationale: Pareto charts help prioritize improvement efforts by highlighting the
largest contributors to problems.
12. Which tool is commonly used to identify potential root causes of a
problem?
A. Fishbone diagram
B. Histogram
C. Check sheet
D. Control chart
Correct Answer: A. Fishbone diagram
1. What is the primary goal of Six Sigma methodology?
A. Increase employee workload
B. Reduce process variation and improve quality
C. Eliminate all employees from processes
D. Increase production speed regardless of defects
Correct Answer: B. Reduce process variation and improve quality
Rationale: Six Sigma focuses on improving processes by reducing defects,
minimizing variation, and increasing customer satisfaction.
2. What does DMAIC stand for?
A. Define, Measure, Analyze, Improve, Control
B. Develop, Manage, Assess, Implement, Create
C. Design, Measure, Improve, Analyze, Control
D. Define, Monitor, Inspect, Adjust, Correct
Correct Answer: A. Define, Measure, Analyze, Improve, Control
Rationale: DMAIC is the structured Six Sigma problem-solving framework used
for improving existing processes.
3. Which Six Sigma phase identifies the problem and defines project goals?
A. Measure
B. Analyze
C. Define
D. Control
Correct Answer: C. Define
,Rationale: The Define phase establishes the problem statement, project scope,
customer requirements, and objectives.
4. What is the role of a Six Sigma Green Belt?
A. Lead all company operations
B. Support improvement projects and apply Six Sigma tools
C. Replace senior management
D. Approve all financial decisions
Correct Answer: B. Support improvement projects and apply Six Sigma tools
Rationale: Green Belts typically work on improvement projects while applying
Six Sigma methods and tools.
5. What does VOC represent in Six Sigma?
A. Value of Customers
B. Voice of Customer
C. Variation of Control
D. Volume of Costs
Correct Answer: B. Voice of Customer
Rationale: VOC represents customer needs, expectations, and requirements that
guide process improvements.
6. A CTQ characteristic is:
A. A financial report
B. A Critical To Quality requirement important to customers
C. A production schedule
D. A management strategy
Correct Answer: B. A Critical To Quality requirement important to customers
,Rationale: CTQs translate customer expectations into measurable requirements.
7. Which tool visually shows the steps in a process?
A. Histogram
B. Process map
C. Scatter plot
D. Control chart
Correct Answer: B. Process map
Rationale: Process maps display activities, decisions, and workflow sequences.
8. What does a SIPOC diagram represent?
A. Suppliers, Inputs, Process, Outputs, Customers
B. Systems, Information, Planning, Operations, Control
C. Suppliers, Inspection, Production, Output, Cost
D. Standards, Improvement, Process, Organization, Customers
Correct Answer: A. Suppliers, Inputs, Process, Outputs, Customers
Rationale: SIPOC provides a high-level overview of a process and identifies key
stakeholders.
9. Which phase of DMAIC focuses on collecting and analyzing current process
data?
A. Define
B. Measure
C. Improve
D. Control
Correct Answer: B. Measure
, Rationale: The Measure phase establishes baseline performance using reliable
data.
10. What is a defect in Six Sigma terminology?
A. A product or service that fails to meet customer requirements
B. A highly efficient process
C. A customer compliment
D. A process improvement idea
Correct Answer: A. A product or service that fails to meet customer
requirements
Rationale: A defect occurs when an output does not meet specified requirements.
11. What is the purpose of a Pareto chart?
A. Show relationships between variables
B. Identify the most significant causes of problems
C. Measure process variation over time
D. Display process steps
Correct Answer: B. Identify the most significant causes of problems
Rationale: Pareto charts help prioritize improvement efforts by highlighting the
largest contributors to problems.
12. Which tool is commonly used to identify potential root causes of a
problem?
A. Fishbone diagram
B. Histogram
C. Check sheet
D. Control chart
Correct Answer: A. Fishbone diagram
