Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt DMAIC: Analyze Phase Techniques Questions and Answers 2 — Questions and Answers
Question 1: Which graphical tool is used in the Analyze phase to visually display the relationship between two continuous variables?
- Scatter diagram (Correct answer)
- Pareto chart
- Control chart
- Histogram
Correct answer: Scatter diagram
A scatter diagram plots paired data points to reveal correlation or patterns between two continuous variables.
Question 2: What is the primary purpose of a hypothesis test during the Analyze phase?
- To determine if observed differences are statistically significant (Correct answer)
- To collect baseline data for the project
- To implement process improvements
- To create a project charter
Correct answer: To determine if observed differences are statistically significant
Hypothesis testing determines whether observed differences or relationships in data are statistically significant or due to random chance.
Question 3: In a cause-and-effect (fishbone) diagram, which of the following is NOT a traditional 6M category?
- Money (Correct answer)
- Machine
- Method
- Manpower
Correct answer: Money
The traditional 6Ms are Manpower, Machine, Method, Material, Measurement, and Mother Nature (Environment), not Money.
Question 4: What does a p-value less than 0.05 typically indicate in the Analyze phase?
- The null hypothesis should be rejected (Correct answer)
- The process is in statistical control
- The sample size is too small
- The data is normally distributed
Correct answer: The null hypothesis should be rejected
A p-value below 0.05 indicates sufficient evidence to reject the null hypothesis at the 95% confidence level.
Question 5: Which analysis technique compares the means of three or more groups to determine if at least one is significantly different?
- ANOVA (Correct answer)
- Two-sample t-test
- Chi-square test
- Regression analysis
Correct answer: ANOVA
Analysis of Variance (ANOVA) tests whether the means of three or more groups differ significantly from each other.
Question 6: What is multi-vari analysis primarily used for in the Analyze phase?
- Identifying the dominant source of variation among positional, cyclical, and temporal factors (Correct answer)
- Calculating process capability indices
- Determining sample size requirements
- Mapping the current state value stream
Correct answer: Identifying the dominant source of variation among positional, cyclical, and temporal factors
Multi-vari analysis categorizes variation into positional, cyclical, and temporal components to identify the dominant source.
Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt DMAIC: Analyze Phase Techniques Questions and Answers 2
Which graphical tool is used in the Analyze phase to visually display the relationship between two continuous variables?