Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt Improve Phase and Solutions Questions and Answers 2 — Questions and Answers
Question 1: Which tool is used in the Improve phase to systematically evaluate potential solutions against weighted criteria?
- Pugh matrix (Correct answer)
- Pareto chart
- Control chart
- Fishbone diagram
Correct answer: Pugh matrix
A Pugh matrix compares solution alternatives against weighted selection criteria to identify the best option.
Question 2: What is the primary purpose of conducting a pilot test before full-scale implementation of an improvement?
- To validate the solution on a small scale and identify unforeseen issues (Correct answer)
- To satisfy upper management requirements
- To delay the project timeline
- To reduce the number of team members needed
Correct answer: To validate the solution on a small scale and identify unforeseen issues
Pilot testing validates that a proposed solution works effectively on a limited scale before committing resources to full deployment.
Question 3: In a designed experiment (DOE), what does a main effect represent?
- The change in response caused by changing the level of one factor (Correct answer)
- The interaction between two or more factors
- The random error in the experiment
- The baseline measurement before experimentation
Correct answer: The change in response caused by changing the level of one factor
A main effect measures the average change in the response variable when a single factor is changed from one level to another.
Question 4: Which Improve phase technique uses structured brainstorming to generate creative solutions by challenging assumptions?
- SCAMPER (Correct answer)
- 5 Whys
- Gemba walk
- Value stream mapping
Correct answer: SCAMPER
SCAMPER prompts teams to Substitute, Combine, Adapt, Modify, Put to other use, Eliminate, and Reverse elements to generate innovative solutions.
Question 5: What is a key risk of implementing multiple solutions simultaneously during the Improve phase?
- Difficulty isolating which solution caused the observed improvement (Correct answer)
- Reduced team engagement
- Increased documentation requirements
- Lower overall cost of implementation
Correct answer: Difficulty isolating which solution caused the observed improvement
Implementing multiple changes at once makes it difficult to determine which specific solution drove the improvement in performance.
Question 6: What does FMEA stand for, and when is it applied in the Improve phase?
- Failure Mode and Effects Analysis, used to assess risks of proposed solutions (Correct answer)
- Fundamental Measurement and Evaluation Assessment, used to measure baselines
- Factorial Model for Experimental Analysis, used in DOE
- Final Metrics and Efficiency Audit, used after implementation
Correct answer: Failure Mode and Effects Analysis, used to assess risks of proposed solutions
FMEA identifies potential failure modes of a proposed solution and prioritizes them by severity, occurrence, and detectability to mitigate risks before implementation.
Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt Improve Phase and Solutions Questions and Answers 2
Which tool is used in the Improve phase to systematically evaluate potential solutions against weighted criteria?