Lean Six Sigma Green Belt Certification Free Lean Six Sigma Green Belt Questions and Answers 2 — Questions and Answers
Question 1: What is the primary purpose of a SIPOC diagram in the Define phase?
- To provide a high-level overview of the process including suppliers, inputs, process steps, outputs, and customers (Correct answer)
- To calculate the sigma level of a process
- To identify the root cause of defects
- To create a detailed process flowchart
Correct answer: To provide a high-level overview of the process including suppliers, inputs, process steps, outputs, and customers
A SIPOC diagram maps Suppliers, Inputs, Process, Outputs, and Customers to give a high-level snapshot of the process scope.
Question 2: In a control chart, what does a point beyond the Upper Control Limit (UCL) indicate?
- The process is operating within normal variation
- Special cause variation is likely present (Correct answer)
- The measurement instrument is broken
- The sample size is too small
Correct answer: Special cause variation is likely present
A point beyond the UCL signals special cause variation, meaning something unusual has affected the process.
Question 3: Which of the following best describes the concept of 'Voice of the Customer' (VOC)?
- Internal quality metrics set by management
- The customer's stated and unstated needs and expectations (Correct answer)
- The company's marketing message to customers
- Employee feedback about customer interactions
Correct answer: The customer's stated and unstated needs and expectations
VOC captures both the expressed and latent needs and expectations of customers to drive quality improvements.
Question 4: What does a Measurement System Analysis (MSA) primarily evaluate?
- Whether the process is capable of meeting specifications
- The accuracy, precision, and stability of the measurement system itself (Correct answer)
- How fast measurements can be taken
- The cost-effectiveness of measurement equipment
Correct answer: The accuracy, precision, and stability of the measurement system itself
MSA evaluates the measurement system for repeatability, reproducibility, accuracy, and stability to ensure data reliability.
Question 5: What is the purpose of a Pareto chart in Lean Six Sigma?
- To show the trend of a metric over time
- To identify the vital few causes that account for the majority of problems (Correct answer)
- To display the relationship between two variables
- To map the flow of materials through a process
Correct answer: To identify the vital few causes that account for the majority of problems
A Pareto chart applies the 80/20 rule to prioritize the few significant causes that drive most of the defects or issues.
Question 6: Which tollgate review occurs at the end of the Improve phase in DMAIC?
- Verification that the problem statement is accurate
- Confirmation that root causes have been statistically validated
- Review of implemented solutions and their verified impact on the process (Correct answer)
- Approval of the control plan and handoff documentation
Correct answer: Review of implemented solutions and their verified impact on the process
The Improve tollgate confirms that solutions have been implemented and their positive impact on the process has been verified with data.
Lean Six Sigma Green Belt Certification Free Lean Six Sigma Green Belt Questions and Answers 2
What is the primary purpose of a SIPOC diagram in the Define phase?