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Six Sigma Yellow Belt Test Questions and Answers

Updated on September 18, 2014

Yellow Belt Answers

Six Sigma Yellow Belt questions are a vital resource when developing expertise in this famous quality management discipline. While Six Sigma is at heart a practical skill set, there is still a clear body of conceptual knowledge which requires memorisation and understanding. Six Sigma Yellow Belts constitute the first rung of the ladder in terms of expertise and mastery, as a quality leader develops through the Green Belt, Black Belt and Master Black Belt qualifications. Yet few would argue that the foundations of a house are not the most important, and the skills learned during this initial Yellow Belt training phase are essential for all future growth.

In the words of life coach and quality practitioner Anthony Robbins, "Practise fundamentals daily". Repetition and self-testing can help achieve these goal, as does relentless application of the PDCA cycle and DMAIC methodology to all aspects of the working environment. This hub consists of 50 questions on lean Yellow Belt quality concepts, as well as some higher level questions thrown in for fun. Whether you are a long-standing quality practitioner or still learning the ways of the Force, enjoy and good luck!

Six Sigma Yellow Belt Questions

1. DMAIC stands for "Define, Measure, Analyze, Integrate, Control". True or false?

2. In a Gage R&R, the "R&R" stands for reliability and reproducibility. True or false?

3. W. Edwards Deming is often described as the father of modern quality control. He is well known for the PDCA cycle. What does this acronym stand for?

4. A dependent variable ("Y") drives the performance of an independent variable ("X"). True or false?

5. The Kano model is a technique typically used to identify the hidden factory in a process. True or false?

6. What is the formula for DPMO?

7. Which of these does a Project Champion typically not do?

  • a) Defines projects
  • b) Breaks down roadblocks
  • c) Helps obtain resources
  • d) Provides technical Six Sigma expertise.

8. The Kano model is a technique to understand how well products or services meet customer needs. True or false?

9. The term "FMEA" stands for

  • a) Failure Mode and Effects Analysis
  • b Failure Methods and Engineering Analysis
  • c) Failure Mode and Enhancement Appraisal
  • d) Final Model of Engineering Analysis

10. A run chart is used to analyze attribute data. True or false?

11. A Fishbone diagram, a Cause and Effect Diagram and an Ishikawa diagram are all different names for the same visual analytical tool. True or false?

12. A Gage R&R is a form of Measurement System Analysis. True or false?

13. What is the formula for sample standard deviation?

14. A useful rule of thumb in hypothesis testing is that if the P value is under 0.05%, the null hypothesis should be accepted. True or false?

15. What is a Yamazumi Chart? Explain in 50 words or less.

16. A Type I error is taking action when it is not needed (false positive); a Type II error is not taking action when you should have done (false negative). True or false?

17. Root cause analysis, Pareto diagrams and Y=f(x) analysis are most commonly associated with the Control phase. True or false?

18. Which of these does a Black Belt typically not do?

  • a) Applies kaizen thinking for continuous improvement
  • b) Line manages the improved process once implemented
  • c) Uses analytical tools to identify the root causes of problems
  • d) Personally leads Six Sigma projects

19. In a box plot, the line in the middle of the box is the median. True or false?

20. Which major US company embraced Six Sigma in the 1990s and helped bring it to widespread attention?

  • a) Goldman Sachs
  • b) General Electric
  • c) General Motors
  • d) Blue Star Airlines

Congratulations on completing the test. The answers are below.

Six Sigma Yellow Belt Answers

1. False. DMAIC stands for "Define, Measure, Analyze, Improve, Control"

2. False. The R&R stands for "Repeatability" and "Reproducibility"

3. PDCA stands for Plan -- Do -- Check -- Act.

4. False. An independent variable ("X") drives the performance of a dependent variable ("Y").

5. False. The Kano model is a customer satisfaction model.

6. DPMO is typically defined as Defect/ (Units * Opportunities), all multiplied by 1 million.

7. d) Provides technical Six Sigma expertise. A Project Manager is normally a business person. Six Sigma "profound knowledge" (Deming) is the preserve of the Black Belt or Master Black Belt.

8. True.

9. a) Failure Modes and Effects Analysis

10. A run chart is used to analyse variable data.

11. True. These are all names for the same type of chart.

12. True. A Gage R&R tests the effectiveness of your measurement system.

13. The formula for sample standard deviation is best explained on Wikipedia.

14. False. The reverse is true. "If the p is low, the null must go" i.e. the null hypothesis should be rejected.

15. Yamazumi charts are explained here.

16. True. The question is a little clumsy but is correct. Technically, a Type I error is incorrectly rejecting the null hypothesis (an error of commission); a Type II error is failing to reject the null hypothesis when you should have done so (an error of omission).

17. False. These are most commonly associated with the introductory phases (Define - Measure - Analyze) of a project, although clearly they may be used at any point.

18. b) A Six Sigma Black Belt will not normally take over line management responsibility for an improved process on an ongoing basis. He or she will be on to the next project!

19. True. Boxplots are explained here.

20. b) General Electric. Jack Welch was a strong advocate of Six Sigma.


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