Which of the terms below best represent an Output Variable?
OPTIONS Coded Dummy Response KPI ANSWER Response EXPLANATION Response is the technical and operational term for an output variable.
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Category: LSSBB/ Lean Six Sigma Black Belt
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A Best Subset Regression is performed on a series of Predictors and Output Variable. An important metric is used that compares the precision of the full models to the models resulting from individual predictors
OPTIONS Mallows Cp Durbin Watson Statistic Lack of Fit Statistic PRESS Statistic ANSWER Mallows Cp EXPLANATION Mallows Cp is the term used for this purpose.
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The Box Plot below represents a method of how the Black Belt would have collected his data. The method is
OPTIONS Clustering Probability Stratified Systematic ANSWER Stratified EXPLANATION As you can see the Box Plot clearly shows the entire data has been separately collected for each groups, clearly indicating stratification, so STRATIFIED is correct.
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In a Cause and Effect Diagram, what is the most important point a Black Belt should look out for, relating to a specific cause?
OPTIONS If the cause happens due to another cause If the cause happens regularly If the cause is measurable If the cause is the root cause ANSWER If the cause is measurable EXPLANATION Six Sigma being a statistical approach, the Black Belt should at all...
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Which of these tools should be used with Cause and Effect Diagram to learn about a possible root cause affecting a problem?
OPTIONS Pareto Charts Brainstorming 5 WHY Correlation ANSWER 5 WHY EXPLANATION 5 WHY is a simple and powerful Root cause Analysis technique.
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Which of these is the best indicator of occurrence of a Special Cause of a Variation?
OPTIONS Cause that happens periodically Cause that comes from outside of the process Cause that can be assigned a reason None of the above ANSWER Cause that can be assigned a reason. EXPLANATION Special causes can be tracked back to a reason and thus THE...
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What is the probability that the next audit will reveal 0 non-conformances?
A company producing marker pens conducts external audits once production of a lot is completed. Several audits on 50 pens revealed 3 minor non-conformances. What is the probability that the next audit will reveal 0 non-conformances? OPTIONS 0.05 0.07 0.1 0.12 ANSWER 0.05 EXPLANATION Using...
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An IMR Chart is shown below. What should a Black Belt when he plots a chart like this
OPTIONS Conclude process is stable Conclude process could be stable, but investigation needs to be done on trends Conclude process is out of control None of the above ANSWER Conclude process could be stable, but investigation needs to be done on trends EXPLANATION As you...
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If Cp = 1.3, Cpk = 1.2, what should the Black Belt do first?
OPTIONS Leave the process to chance variations Identify signal and keep looking out for signals Center the mean None of the above Correct Option:A Leave the process to chance variations EXPLANATION A Black Belt doesn’t have to work on this process at all, as the...
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If Cp = 1.2 Cpk = 0.7, what should the Black Belt do first?
OPTIONS Reduce variations Center the mean Bring the process in statistical control The choice of what to do rests with the Black Belt ANSWER Center the mean EXPLANATION As the difference between Cp and Cpk is relatively large, the Black Belt should look to center...
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