Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt DMAIC: Measure Phase Tools Questions and Answers 2 — Questions and Answers
Question 1: What is the primary purpose of a Gage R&R study in the Measure phase?
- To assess the repeatability and reproducibility of a measurement system (Correct answer)
- To calculate process capability indices
- To identify root causes of defects
- To establish control limits for a process
Correct answer: To assess the repeatability and reproducibility of a measurement system
A Gage R&R study evaluates whether a measurement system produces consistent results across different operators and repeated measurements.
Question 2: Which metric represents the total number of defect opportunities per million in a process?
- Cp
- DPMO (Correct answer)
- Cpk
- RTY
Correct answer: DPMO
Defects Per Million Opportunities (DPMO) quantifies the defect rate normalized to one million opportunities, enabling comparison across different processes.
Question 3: A process has a Cpk of 0.8. What does this indicate?
- The process is highly capable and centered
- The process is not capable of meeting specifications (Correct answer)
- The process has no variation
- The process exceeds Six Sigma performance
Correct answer: The process is not capable of meeting specifications
A Cpk below 1.0 indicates the process is not capable of consistently producing output within specification limits.
Question 4: What type of data would you collect when recording the number of scratches found on a painted surface?
- Continuous data
- Discrete (attribute) data (Correct answer)
- Variable data
- Nominal data
Correct answer: Discrete (attribute) data
Counting defects such as scratches produces discrete attribute data because each scratch is a countable, whole-number event.
Question 5: In a measurement system analysis, what does 'reproducibility' specifically evaluate?
- Variation due to different operators measuring the same part (Correct answer)
- Variation within one operator measuring the same part repeatedly
- Variation caused by the measuring instrument's calibration
- Variation between different parts in the sample
Correct answer: Variation due to different operators measuring the same part
Reproducibility measures the variation introduced when different operators use the same gage to measure identical parts.
Question 6: Which tool is used to visually display the frequency distribution of collected process data during the Measure phase?
- Fishbone diagram
- Histogram (Correct answer)
- SIPOC diagram
- Failure mode matrix
Correct answer: Histogram
A histogram displays data in bars representing frequency intervals, making it easy to see the shape, spread, and center of a data distribution.
Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt DMAIC: Measure Phase Tools Questions and Answers 2
What is the primary purpose of a Gage R&R study in the Measure phase?