Certified Six Sigma Black Belt Exam Trivia 4

Question 1

Which phase of DMAIC focuses on identifying all possible causes of a problem using tools like fishbone diagrams and 5 Whys?

Accepted Answer

Analyze

Answer

The Analyze phase is dedicated to identifying and verifying root causes of the problem through tools like cause-and-effect diagrams, regression analysis, and hypothesis testing.

Question 2

What is the primary purpose of a 'Gage R&R' study in Six Sigma?

Accepted Answer

Assess measurement system variation relative to process variation

Answer

Gage Repeatability and Reproducibility (Gage R&R) evaluates how much variation in measurements comes from the measurement system itself versus the actual process variation.

Question 3

In Design of Experiments (DOE), a 'full factorial' design tests:

Accepted Answer

All possible combinations of all factor levels

Answer

A full factorial design tests every possible combination of factor levels, providing complete information on main effects and all interactions.

Question 4

The 'kano model' classifies customer needs into categories. Which category describes features that customers don't ask for but delight them when present?

Accepted Answer

Attractive requirements

Answer

Attractive requirements (also called 'delighters' or 'exciters') are unexpected features that generate high satisfaction when present but cause no dissatisfaction when absent.

Question 5

Which of the following is a non-parametric alternative to the one-sample t-test?

Accepted Answer

Wilcoxon signed-rank test

Answer

The Wilcoxon signed-rank test is the non-parametric equivalent of the one-sample t-test, used when normality assumptions cannot be met.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Trivia 4