Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt Knowledge 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, 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 flow with cycle times
Correct answer: To provide a high-level overview of the process including Suppliers, Inputs, Process, Outputs, and Customers
A SIPOC diagram maps Suppliers, Inputs, Process steps, Outputs, and Customers to give a high-level snapshot of the process scope.
Question 2: In a hypothesis test, what does a Type II error represent?
- Rejecting a true null hypothesis
- Failing to reject a false null hypothesis (Correct answer)
- Accepting the alternative hypothesis correctly
- Rejecting the alternative hypothesis correctly
Correct answer: Failing to reject a false null hypothesis
A Type II error (beta error) occurs when you fail to reject the null hypothesis even though it is actually false.
Question 3: Which Lean tool uses a visual board with columns such as To Do, In Progress, and Done to manage workflow?
- Value Stream Map
- Kanban (Correct answer)
- Pareto Chart
- Fishbone Diagram
Correct answer: Kanban
Kanban is a visual workflow management method that uses cards on a board with columns to limit work in progress and optimize flow.
Question 4: What does the term 'Muda' refer to in Lean methodology?
- Overproduction planning
- Waste in a process (Correct answer)
- Variability in output
- Overburdening of workers
Correct answer: Waste in a process
Muda is the Japanese term for waste, referring to any activity that consumes resources but creates no value for the customer.
Question 5: Which statistical measure describes the spread of data by calculating the average squared deviation from the mean?
- Range
- Standard deviation
- Variance (Correct answer)
- Interquartile range
Correct answer: Variance
Variance is calculated as the average of the squared differences from the mean, measuring how far data points spread from the central value.
Question 6: During the Improve phase, what technique involves systematically testing multiple factors and their interactions to find optimal settings?
- Regression analysis
- Design of Experiments (DOE) (Correct answer)
- Benchmarking
- Failure Mode and Effects Analysis
Correct answer: Design of Experiments (DOE)
Design of Experiments (DOE) is a structured method for planning experiments to efficiently evaluate how multiple factors and their interactions affect a process output.
Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt Knowledge Questions and Answers 2
What is the primary purpose of a SIPOC diagram in the Define phase?