Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Certification MCQ Questions and Answers 2 — Questions and Answers
Question 1: What is the primary purpose of a tollgate review in DMAIC?
- To ensure phase deliverables are complete before proceeding (Correct answer)
- To assign blame for project delays
- To reduce the number of team members
- To skip unnecessary phases
Correct answer: To ensure phase deliverables are complete before proceeding
Tollgate reviews verify that all required deliverables and criteria for a phase are satisfied before the team moves to the next phase.
Question 2: Which statistical test is most appropriate for comparing means of three or more groups?
- Chi-square test
- Paired t-test
- ANOVA (Correct answer)
- Two-sample t-test
Correct answer: ANOVA
ANOVA (Analysis of Variance) is designed to compare means across three or more groups simultaneously.
Question 3: In a control chart, what does a point beyond the upper control limit indicate?
- The process is operating normally
- A special cause of variation is present (Correct answer)
- The specification limit has been exceeded
- The sample size is too small
Correct answer: A special cause of variation is present
A point beyond a control limit signals that a special cause of variation is likely affecting the process.
Question 4: What does the term 'entitlement' refer to in Lean Six Sigma?
- The best performance a process has demonstrated historically (Correct answer)
- The customer's minimum acceptable quality level
- The theoretical maximum output of a machine
- The budget allocated to a Six Sigma project
Correct answer: The best performance a process has demonstrated historically
Entitlement is the best sustained performance a process has already shown it can achieve without capital investment.
Question 5: Which tool is used to prioritize potential failure modes based on severity, occurrence, and detection?
- Pareto chart
- FMEA (Correct answer)
- Fishbone diagram
- SIPOC
Correct answer: FMEA
FMEA (Failure Mode and Effects Analysis) calculates a Risk Priority Number using severity, occurrence, and detection ratings.
Question 6: What is the purpose of a multi-vari study?
- To identify the dominant source of variation among positional, cyclical, and temporal families (Correct answer)
- To calculate process capability indices
- To design a full factorial experiment
- To map the value stream of a process
Correct answer: To identify the dominant source of variation among positional, cyclical, and temporal families
A multi-vari study categorizes variation into families (positional, cyclical, temporal) to identify which contributes most to overall variation.
Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Certification MCQ Questions and Answers 2
What is the primary purpose of a tollgate review in DMAIC?