Certified Six Sigma Black Belt Exam Free Certified Six Sigma Black Belt MCQ Questions and Answers 2

Question 1

Which statistical test is most appropriate for comparing the means of three or more groups in a Six Sigma project?

Accepted Answer

One-way ANOVA

Answer

One-way ANOVA is used to compare means across three or more independent groups to determine if at least one differs significantly.

Question 2

In a cause-and-effect matrix, what does the correlation score represent?

Accepted Answer

The strength of the relationship between process inputs and key outputs

Answer

The correlation score in a C&E matrix quantifies how strongly each process input affects each prioritized output.

Question 3

What is the primary purpose of a Measurement System Analysis (MSA)?

Accepted Answer

To quantify the amount of variation contributed by the measurement system

Answer

MSA determines how much of the observed process variation is attributable to the measurement system itself rather than the actual process.

Question 4

A Black Belt discovers that residuals in a regression model show a funnel-shaped pattern when plotted against fitted values. What assumption is violated?

Accepted Answer

Constant variance (homoscedasticity)

Answer

A funnel-shaped residual pattern indicates heteroscedasticity, meaning the variance of residuals changes across the range of fitted values.

Question 5

Which Lean tool uses a visual board with columns representing workflow stages to limit work-in-progress?

Accepted Answer

Kanban

Answer

Kanban boards visualize workflow stages and enforce WIP limits to improve flow and reduce lead time.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Free Certified Six Sigma Black Belt MCQ Questions and Answers 2