Lean Six Sigma Green Belt Certification DMAIC: Define Phase Concepts 4 — Questions and Answers
Question 1: Which of the following BEST describes 'scope creep' in a Six Sigma project?
- A gradual decrease in team member participation over time
- The unauthorized expansion of project boundaries beyond what was chartered (Correct answer)
- The increase in defect rate during the Improve phase
- A delay in completing tollgate reviews on schedule
Correct answer: The unauthorized expansion of project boundaries beyond what was chartered
Scope creep occurs when the project boundaries expand beyond the original charter without formal approval, often causing delays and resource overruns.
Question 2: What is a 'tollgate review' in the DMAIC methodology?
- A financial audit of project spending conducted by accounting
- A structured checkpoint where leadership reviews and approves progress before the team moves to the next phase (Correct answer)
- A customer satisfaction survey administered at project completion
- A quality inspection of process outputs during the Control phase
Correct answer: A structured checkpoint where leadership reviews and approves progress before the team moves to the next phase
Tollgate reviews are formal checkpoints between DMAIC phases where the sponsor and leadership verify that phase deliverables are complete before authorizing the next phase.
Question 3: A team translates VOC data into specific, measurable product or service requirements. This translation process results in which output?
- A Pareto chart of defect types
- CTQ (Critical to Quality) characteristics (Correct answer)
- A control plan for the Improve phase
- A regression analysis of key variables
Correct answer: CTQ (Critical to Quality) characteristics
The VOC translation process converts customer language and needs into specific, measurable CTQ characteristics that can be tracked and improved.
Question 4: In the Define phase, the team identifies the process start and end points. These boundaries are known as what?
- CTQ thresholds
- Process entitlement and baseline
- Project scope boundaries (start and stop) (Correct answer)
- Control limits
Correct answer: Project scope boundaries (start and stop)
Defining the process start and stop points establishes the project scope, clarifying which steps are included in the improvement effort.
Question 5: Which statement about a SMART goal statement in a project charter is CORRECT?
- It should be broad enough to allow flexibility as the project evolves
- It must be Specific, Measurable, Achievable, Relevant, and Time-bound (Correct answer)
- It should identify the root cause of the problem being addressed
- It is optional if the business case is sufficiently detailed
Correct answer: It must be Specific, Measurable, Achievable, Relevant, and Time-bound
A SMART goal statement ensures the project has a clear, quantifiable target with a defined timeline, making success objectively measurable.
Question 6: During Define, a Green Belt identifies that a process has multiple customers with conflicting needs. What is the BEST approach?
- Ignore secondary customers and focus only on the most profitable segment
- Prioritize CTQs by customer segment and discuss trade-offs with the champion (Correct answer)
- Redesign the process to meet all customer needs simultaneously without compromises
- Proceed directly to the Measure phase and resolve conflicts later
Correct answer: Prioritize CTQs by customer segment and discuss trade-offs with the champion
When customers have conflicting needs, the team should segment CTQs by customer group and work with the champion to prioritize based on business strategy.
Question 7: What is the MAIN difference between a 'problem statement' and a 'goal statement' in the project charter?
- The problem statement assigns blame; the goal statement does not
- The problem statement describes the current gap; the goal statement quantifies the desired improvement (Correct answer)
- The problem statement is written by the champion; the goal statement by the Green Belt
- There is no meaningful difference; they convey the same information
Correct answer: The problem statement describes the current gap; the goal statement quantifies the desired improvement
The problem statement describes the current undesirable condition, while the goal statement specifies the measurable target the team is working toward.
Lean Six Sigma Green Belt Certification DMAIC: Define Phase Concepts 4
Which of the following BEST describes 'scope creep' in a Six Sigma project?