Lean Six Sigma Green Belt Certification Define Phase Concepts 5 — Questions and Answers
Question 1: Which Lean Six Sigma concept describes the measurable, specific requirement derived from a broader customer need using a CTQ tree?
- Control limit
- Critical to Quality (CTQ) characteristic (Correct answer)
- Defect opportunity
- Process capability index
Correct answer: Critical to Quality (CTQ) characteristic
CTQ characteristics are the actionable, measurable outputs of a CTQ tree that directly reflect what matters most to the customer.
Question 2: A sponsor wants to know how the project team will communicate progress throughout the project. Which Define phase document typically addresses this?
- SIPOC diagram
- Communication plan within the project charter (Correct answer)
- Fishbone diagram
- Run chart
Correct answer: Communication plan within the project charter
The project charter often includes or references a communication plan that outlines how, how often, and to whom project updates will be provided.
Question 3: During Define, a team identifies that a key stakeholder is resistant to the project. What is the recommended approach?
- Exclude them from project updates to avoid conflict
- Conduct a stakeholder analysis and develop an engagement strategy (Correct answer)
- Escalate immediately to executive leadership
- Proceed without their input and document the refusal
Correct answer: Conduct a stakeholder analysis and develop an engagement strategy
A stakeholder analysis identifies concerns and resistance early, enabling the team to develop targeted engagement strategies.
Question 4: Which best describes the relationship between VOC and CTQ in the Define phase?
- VOC replaces CTQ when customer feedback is sufficient
- CTQ translates broad VOC themes into specific, measurable requirements (Correct answer)
- VOC is collected after CTQs are defined
- CTQ and VOC refer to the same concept
Correct answer: CTQ translates broad VOC themes into specific, measurable requirements
VOC captures what customers say they want, while CTQs translate those statements into the measurable process characteristics the team will target.
Question 5: A Green Belt identifies that the project goal is to 'reduce invoice processing errors by 50% within 4 months.' Where should this goal be documented in the Define phase?
- In the control plan
- In the goal statement section of the project charter (Correct answer)
- In the FMEA risk table
- In the response surface design
Correct answer: In the goal statement section of the project charter
The goal statement is a formal section of the project charter that captures the quantified improvement target and timeline.
Question 6: When conducting a Kano analysis, which feature type has a symmetrical relationship — meaning more of it leads to more satisfaction, and less leads to more dissatisfaction?
- Basic (must-be) needs
- Excitement (delighter) needs
- Performance (one-dimensional) needs (Correct answer)
- Indifferent needs
Correct answer: Performance (one-dimensional) needs
Performance needs are linear: the more the feature is present, the more satisfied customers are, and vice versa.
Question 7: Which Define phase activity ensures the team and sponsor have aligned on what is IN scope and what is OUT of scope before proceeding?
- Measurement system analysis
- Scope definition in the project charter (Correct answer)
- Statistical hypothesis testing
- Design of Experiments
Correct answer: Scope definition in the project charter
Explicitly defining in-scope and out-of-scope boundaries in the project charter prevents scope creep and sets shared expectations.
Lean Six Sigma Green Belt Certification Define Phase Concepts 5
Which Lean Six Sigma concept describes the measurable, specific requirement derived from a broader customer need using a CTQ tree?