Skip to main content Skip to course navigation

Final Green Belt Certification Quiz

Which development is most closely associated with the emergence of Six Sigma as a formal quality-improvement approach? *
What is the primary purpose of the DMAIC framework? *
A Six Sigma project should normally begin with which condition? *
Which characteristic makes a project especially suitable for Green Belt treatment? *
Why is project selection important before detailed analysis begins? *
Which statement best describes a problem statement? *
Which item establishes what the project will and will not address? *
Who normally provides organizational sponsorship, removes major barriers and supports the project at a leadership level? *
What is the main purpose of a project goal statement? *
A team discovers that its original project scope is expanding to include several unrelated processes. What risk is this? *
Which DMAIC phase establishes the problem, business case, goal and project boundaries? *
Which DMAIC phase focuses on establishing reliable baseline performance? *
Which phase primarily identifies and verifies important causes of the problem? *
Which phase is primarily concerned with developing and implementing solutions? *
Which phase ensures the improved process remains stable and performs as intended? *
Which project should generally be approached cautiously as a Six Sigma improvement project? *
Which is a useful preliminary charter element because it identifies conditions that may affect project execution? *
Why should stakeholders be identified during charter development? *
Which criterion directly addresses whether the project can be supported by credible evidence? *
A project has high customer impact, measurable performance, available data, manageable scope and sponsor support. What does this combination primarily indicate? *
Which data type represents counts such as the number of defects on a unit? *
Which measurement is continuous? *
Which scale has categories with a meaningful order but without equal numerical intervals? *
Which scale has a meaningful zero and permits meaningful ratios? *
Which sampling method gives each member of a population an equal basic chance of selection? *
A company divides employees into day, evening and night shifts and samples from each shift. Which method is being used? *
What is the primary concern with convenience sampling? *
Which statistic is least affected by a single extreme outlier? *
For the values 4, 5, 5, 6, 6, 7, 8, 8, 9, 22, what is the median? *
Which graph is particularly useful for displaying the relative frequency of categories in descending order and highlighting the vital few? *
Which graph is most appropriate for showing the distribution of continuous numerical data? *
Which measure describes the spread of observations around the mean? *
A z-score expresses a value's position relative to what? *
Which condition is required for a standard binomial model? *
What is the role of the null hypothesis? *
At α = 0.05, a test produces p = 0.02. What is the statistical decision? *
What does a p-value represent in hypothesis testing? *
Which test is appropriate when the response is a single population proportion compared with a specified target proportion? *
Which comparison is appropriate for two independent groups when the response is continuous? *
When measurements are taken on the same subjects before and after an improvement, which design is especially relevant? *
Why should practical significance be considered in addition to statistical significance? *
What does a correlation coefficient near +1 indicate? *
In the regression equation Ŷ = b₀ + b₁X, what does b₁ represent? *
What does R² describe in a simple linear regression context? *
Which statement is correct about correlation and causation? *
Why are residuals examined after fitting a regression model? *
A scatterplot shows that defects increase as temperature increases. What should the Green Belt do before declaring temperature the root cause? *
Which condition most directly determines whether a proportion test or mean test is appropriate? *
What is the correct interpretation of 'fail to reject H₀'? *
What is the primary purpose of Measurement System Analysis? *
Attribute Agreement Analysis is primarily used when the measurement result is: *
Which agreement dimension compares an appraiser's classifications with a known standard, when a standard is available? *
What does Cohen's Kappa primarily measure? *
Which expression defines Cohen's Kappa? *
Why can percentage agreement and Kappa tell different stories? *
Gage R&R is designed primarily for what type of measurement system? *
What is repeatability in a Gage R&R study? *
What is reproducibility? *
Why should process stability generally be established before capability analysis? *
Which formula represents Cp? *
Which formula represents Cpk? *
A process has Cp = 1.33 but Cpk = 0.67. What does this pattern indicate? *
Which metric uses overall observed variation rather than within-process variation? *
What does DPMO measure? *
What is the main purpose of a control chart? *
What is common-cause variation? *
What is special-cause variation? *
Which chart is commonly appropriate for individual continuous observations when rational subgroups of multiple observations are not available? *
Which chart is commonly used for the number of defectives in samples of constant size? *
Which chart is appropriate for the proportion defective when sample sizes may vary? *
Which chart is designed for counts of defects when the area or opportunity for defects is constant? *
Why are rational subgroups important? *
How do control limits differ from specification limits? *
A point falls outside a statistically calculated control limit. What is the appropriate first response? *
Why should an out-of-control process generally be investigated before capability is interpreted? *
What is a reaction plan? *
Which item is essential in a Control Plan? *
What is the main advantage of preventive control compared with relying only on final inspection? *
Who should normally own ongoing monitoring after a project is handed over? *
Which statement best distinguishes a symptom from a root cause? *
What is the main purpose of the 5 Whys technique? *
Why should root-cause analysis avoid assigning blame to individuals as the primary explanation? *
What is the primary purpose of FMEA? *
In FMEA, Severity primarily represents: *
In traditional FMEA scoring, Occurrence represents: *
In traditional FMEA scoring, Detection represents: *
What is the traditional RPN calculation? *
Which of the following is one of the commonly recognized eight Lean wastes? *
What is the main purpose of Value Stream Mapping? *
Takt time is calculated as: *
Which 5S step focuses on arranging needed items so they are easy to find and use? *
Kanban is primarily associated with what type of production control? *
What is the primary purpose of a WIP limit in a pull system? *
Which distinction is correct? *
What is the primary purpose of change management in a Six Sigma project? *
In a RACI matrix, which role is ultimately answerable for ensuring completion of a task? *
What is process drift? *
Why is standard work important after improvement implementation? *
Why should financial benefits be verified after implementation? *
Which combination best supports long-term sustainment? *