Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Certification Trivia Questions and Answers 2 — Questions and Answers
Question 1: Which statistical test is most appropriate for comparing the means of three or more groups in a Lean Six Sigma project?
- ANOVA (Correct answer)
- Chi-Square Test
- Two-Sample t-Test
- Paired t-Test
Correct answer: ANOVA
ANOVA (Analysis of Variance) is specifically designed to compare means across three or more groups simultaneously.
Question 2: In a Design of Experiments (DOE), what does a 2^3 full factorial design represent?
- 3 factors each at 2 levels (Correct answer)
- 2 factors each at 3 levels
- 3 factors each at 3 levels
- 8 factors each at 2 levels
Correct answer: 3 factors each at 2 levels
A 2^3 full factorial design means 3 factors, each tested at 2 levels, resulting in 8 experimental runs.
Question 3: What is the primary purpose of a SIPOC diagram in the Define phase?
- To provide a high-level overview of the process (Correct answer)
- To calculate process capability
- To identify root causes of defects
- To establish control limits
Correct answer: To provide a high-level overview of the process
A SIPOC diagram maps Suppliers, Inputs, Process, Outputs, and Customers to give a high-level process overview.
Question 4: A process has a Cp of 1.5 and a Cpk of 0.8. What does this indicate?
- The process is capable but not centered (Correct answer)
- The process is both capable and centered
- The process is neither capable nor centered
- The process is centered but not capable
Correct answer: The process is capable but not centered
A high Cp with a lower Cpk indicates the process spread fits within specifications but the mean is shifted off-center.
Question 5: Which Lean waste does the acronym 'TIMWOODS' use the second 'O' to represent?
- Overproduction (Correct answer)
- Over-processing
- Obsolescence
- Outsourcing
Correct answer: Overproduction
In TIMWOODS, the two O's stand for Overproduction and Over-processing, representing two distinct types of waste.
Question 6: What is the minimum sample size rule of thumb for establishing a reliable process capability study?
- At least 30 data points
- At least 10 data points
- At least 50 data points (Correct answer)
- At least 100 data points
Correct answer: At least 50 data points
A minimum of 50 individual data points is generally recommended for a reliable process capability analysis.
Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Certification Trivia Questions and Answers 2
Which statistical test is most appropriate for comparing the means of three or more groups in a Lean Six Sigma project?