Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Certification Prep Questions and Answers 2

Question 1

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

Accepted Answer

One-Way ANOVA

Answer

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

Question 2

In a DMAIC project, what is the primary purpose of the Control phase?

Accepted Answer

Sustain the gains achieved during Improve

Answer

The Control phase focuses on maintaining improvements through control plans, monitoring systems, and standardized procedures to prevent regression.

Question 3

What does a Cp value of 1.33 indicate about a process?

Accepted Answer

The process is capable with adequate margin

Answer

A Cp of 1.33 means the specification width is 1.33 times the process spread, indicating the process is capable with a reasonable safety margin.

Question 4

Which tool is used to prioritize potential failure modes based on severity, occurrence, and detection ratings?

Accepted Answer

Failure Mode and Effects Analysis

Answer

FMEA systematically evaluates potential failures by calculating a Risk Priority Number from severity, occurrence, and detection scores to prioritize corrective actions.

Question 5

What is the purpose of a Gage R&R study in the Measure phase?

Accepted Answer

To assess measurement system variation

Answer

A Gage R&R study quantifies how much of the observed process variation is attributable to the measurement system versus the actual process.

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification Practice Test

Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Certification Prep Questions and Answers 2