Lean Six Sigma Green Belt Sample Paper 2: Analyze 1. Analysis of variance (ANOVA) compares Two population standard deviations Two population variances Two population proportions None of the above2. Which of the following is TRUE? Causes in fishbone must be bucketed into categories starting with the same alphabet. E.g. 6M, 4P, 4S, etc. The scope of the project can be amended once the fishbone gives a clear picture about the problem In affinity diagram the first task is to create categories in which causes having some commonality can be grouped post brainstoriming Ishikawa diagram is another name for Affinity diagram3. In a pareto plot, the secondary Y axis is; % contribution Frequency %cumulative contribution Severity4. FMEA can be used in Analyze phase Improve phase Independently of a Six Sigma project to prioritize risks All the above5. Value adding step in a process is something: Customer is willing to pay for Transforms the product/service Done correctly for the first time All the above6. One of the following is FALSE; P-value is always compared to alpha which is fixed at 0.05 P-value cannot be more than 1 If P-value is less the alpha, then null hypothesis is rejected P-value cannot be less than 07. From the following statements select the one which is NOT TRUE; Higher the RPN, higher the risk Higher detection rank means poor ability to detect Higher severity rank indicates high risk None of the above8. Following is not a statistical approach in identifying critical X’s: ANOVA FMEA 2-sample t test Linear regression9. All the following are graphical tools, EXCEPT Pareto Box Scatter Failure Mode and Effects Analysis10. List of potential X’s can be generated from Fishbone diagram Affinity diagram Cause and effect diagram All the above11. Pareto will only list issues which have occurred in the past, while FMEA will also list potential failures that have no history of occurrence. This makes the former a ______tool; Proactive Better Reactive More reliable12. If alpha is 0.05, then significance level is 0.95 95% 0.05 0.513. PFMEA stands for Potential failure mode and effective analysis Process failure mode and effects analysis Probable failure mode and effects analysis Potential failure means and effects analysis14. One of the following statements about scatterplot is TRUE A negative correlation is a sure sign of a non-critical input (X) Scatter plot can only be made for Discrete data A high correlation does not imply causation None of the above15. XYZ company wants to know whether the proportion of customers opening an e-mail increases if the customer’s name is mentioned in the title. % mails opened with name in title is to be compared with % opened without name in the title. What is the appropriate test for the above objective? 2-Sample t test 2 proportion test Chi-Square test Bartlett test
