Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt The Measure Phase Questions and Answers 2 — Questions and Answers
Question 1: What is the primary purpose of a data collection plan in the Measure phase?
- To ensure consistent, accurate, and relevant data is gathered systematically (Correct answer)
- To assign team roles for the project
- To create a project charter
- To identify root causes of defects
Correct answer: To ensure consistent, accurate, and relevant data is gathered systematically
A data collection plan defines what data to collect, how, when, and by whom to ensure consistency and accuracy.
Question 2: Which metric represents the number of defects per million opportunities?
- Cp
- DPMO (Correct answer)
- Cpk
- RTY
Correct answer: DPMO
DPMO (Defects Per Million Opportunities) normalizes defect counts to allow comparison across processes with different complexities.
Question 3: What does a Measurement System Analysis (MSA) primarily evaluate?
- The capability of the process to meet specifications
- The reliability and accuracy of the measurement system itself (Correct answer)
- The financial cost of collecting data
- The number of defects in a sample
Correct answer: The reliability and accuracy of the measurement system itself
MSA assesses whether the measurement system produces reliable, repeatable, and reproducible results.
Question 4: In the Measure phase, what is the difference between accuracy and precision?
- Accuracy is closeness to the true value; precision is consistency of repeated measurements (Correct answer)
- Accuracy refers to sample size; precision refers to defect count
- They are interchangeable terms in Six Sigma
- Accuracy applies to continuous data only; precision applies to discrete data only
Correct answer: Accuracy is closeness to the true value; precision is consistency of repeated measurements
Accuracy means measurements are close to the actual value, while precision means repeated measurements are close to each other.
Question 5: What type of data would 'pass/fail inspection results' be classified as?
- Continuous data
- Attribute data (Correct answer)
- Variable data
- Ratio data
Correct answer: Attribute data
Pass/fail results are attribute (discrete) data because they fall into distinct categories rather than measured values on a scale.
Question 6: Which tool is used during the Measure phase to visually display process performance over time?
- Fishbone diagram
- Control chart (Correct answer)
- SIPOC diagram
- Affinity diagram
Correct answer: Control chart
Control charts plot data points over time against control limits to reveal process stability and variation patterns.
Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt The Measure Phase Questions and Answers 2
What is the primary purpose of a data collection plan in the Measure phase?