Six Sigma Green Belt Certification Examination
Newest 2025 – 2026 Questions From Past Papers
Actual Exams Complete 100 Questions And Correct
Detailed Answers (Verified Answers) |Already
Graded A+||Brand New!!
Content Covered (Most Tested Topics from the Official
Green Belt Syllabus)
DMAIC methodology, process improvement tools, basic
statistics, process capability, hypothesis testing, control
charts, Lean principles, root cause analysis,
measurement system analysis, and project
management.
1. In the DMAIC methodology, what does the letter D represent?
A. Develop
B. Design
C. Define
D. Deliver
Correct Answer: Define
Explanation: The Define phase establishes the project goals, scope, stakeholders,
and customer requirements before any analysis begins.
2. Which tool is commonly used to identify the root causes of a problem?
A. Histogram
B. Fishbone Diagram
,C. Scatter Plot
D. Control Chart
Correct Answer: Fishbone Diagram
Explanation: The Fishbone Diagram (Ishikawa diagram) organizes potential causes
into categories to help identify root causes of a problem.
3. What is the primary objective of the Measure phase in DMAIC?
A. Implement improvements
B. Establish baseline performance
C. Develop new processes
D. Train employees
Correct Answer: Establish baseline performance
Explanation: The Measure phase collects data to understand the current
performance of the process and establish baseline metrics.
4. Which statistical measure describes the average value of a dataset?
A. Median
B. Mean
C. Mode
D. Range
Correct Answer: Mean
Explanation: The mean is calculated by summing all values and dividing by the
number of observations, representing the average.
5. Which Lean concept focuses on eliminating waste?
A. Kaizen
B. Muda
C. Kanban
D. Heijunka
Correct Answer: Muda
, Explanation: Muda is a Japanese term used in Lean to describe waste that does
not add value to a process.
6. What does CTQ stand for in Six Sigma?
A. Critical to Quality
B. Control Total Quality
C. Certified Technical Quality
D. Continuous Testing Quality
Correct Answer: Critical to Quality
Explanation: CTQs are measurable characteristics of a product or service that are
critical to meeting customer requirements.
7. Which chart displays the distribution of numerical data?
A. Histogram
B. Pareto Chart
C. Control Chart
D. Run Chart
Correct Answer: Histogram
Explanation: A histogram visually represents data distribution across intervals.
8. What is the purpose of a Pareto chart?
A. Monitor variation over time
B. Identify the most significant causes of problems
C. Show correlation between variables
D. Calculate averages
Correct Answer: Identify the most significant causes of problems
Explanation: The Pareto chart follows the 80/20 rule, showing which causes
contribute most to defects or issues.
9. In Six Sigma, what is considered a defect?
Newest 2025 – 2026 Questions From Past Papers
Actual Exams Complete 100 Questions And Correct
Detailed Answers (Verified Answers) |Already
Graded A+||Brand New!!
Content Covered (Most Tested Topics from the Official
Green Belt Syllabus)
DMAIC methodology, process improvement tools, basic
statistics, process capability, hypothesis testing, control
charts, Lean principles, root cause analysis,
measurement system analysis, and project
management.
1. In the DMAIC methodology, what does the letter D represent?
A. Develop
B. Design
C. Define
D. Deliver
Correct Answer: Define
Explanation: The Define phase establishes the project goals, scope, stakeholders,
and customer requirements before any analysis begins.
2. Which tool is commonly used to identify the root causes of a problem?
A. Histogram
B. Fishbone Diagram
,C. Scatter Plot
D. Control Chart
Correct Answer: Fishbone Diagram
Explanation: The Fishbone Diagram (Ishikawa diagram) organizes potential causes
into categories to help identify root causes of a problem.
3. What is the primary objective of the Measure phase in DMAIC?
A. Implement improvements
B. Establish baseline performance
C. Develop new processes
D. Train employees
Correct Answer: Establish baseline performance
Explanation: The Measure phase collects data to understand the current
performance of the process and establish baseline metrics.
4. Which statistical measure describes the average value of a dataset?
A. Median
B. Mean
C. Mode
D. Range
Correct Answer: Mean
Explanation: The mean is calculated by summing all values and dividing by the
number of observations, representing the average.
5. Which Lean concept focuses on eliminating waste?
A. Kaizen
B. Muda
C. Kanban
D. Heijunka
Correct Answer: Muda
, Explanation: Muda is a Japanese term used in Lean to describe waste that does
not add value to a process.
6. What does CTQ stand for in Six Sigma?
A. Critical to Quality
B. Control Total Quality
C. Certified Technical Quality
D. Continuous Testing Quality
Correct Answer: Critical to Quality
Explanation: CTQs are measurable characteristics of a product or service that are
critical to meeting customer requirements.
7. Which chart displays the distribution of numerical data?
A. Histogram
B. Pareto Chart
C. Control Chart
D. Run Chart
Correct Answer: Histogram
Explanation: A histogram visually represents data distribution across intervals.
8. What is the purpose of a Pareto chart?
A. Monitor variation over time
B. Identify the most significant causes of problems
C. Show correlation between variables
D. Calculate averages
Correct Answer: Identify the most significant causes of problems
Explanation: The Pareto chart follows the 80/20 rule, showing which causes
contribute most to defects or issues.
9. In Six Sigma, what is considered a defect?
