ASQ ASQ Six Sigma Green Belt CSSGB Questions & Answers

• Question 321:

  Explain how the coefficient pattern for a 23 full factorial design is used to estimate the effects of one interaction factor (XiXj) on the CTQ.

  Correct Answer: Multiply the signs of Xi and Xj to create a new variable, XiXj. Next, add up the values of the CTQ for which the interaction XiXj is +, then add up the values of the CTQ for which XiXj is -, finally, divide the difference of the sums by the number of plus signs.

• Question 322:

  Why randomize runs in an experimental design.

  Correct Answer: Randomization is done in experimental designs to remove the effects of lurking variables.

• Question 323:

  Use the following design matrix display to answer the following questions.

  Correct Answer: Check the answer in explanation.

  

• Question 324:

  Explain the purpose of a pilot test.

  Correct Answer: A pilot test serves four purposes. First, it validates a revised best practices methoD. Second, it highlights the risks (e.g., FMEA) involved in using the revised best practice methoD. Third, it promotes a smooth implementation of the revised best practice methoD. Finally, it facilitates buy-in by the stakeholders of revised best practice methoD.

• Question 325:

  Analyze the following 23 full factorial design with 2 replications data using Minitab.

  

  

  Correct Answer: Check the answer in explanation.

  

  

  The high-high-high 3-way interaction rules the experiment. To maximize CTQ, set all factors at the high level.

• Question 326:

  Explain the purpose of “risk management.”

  Correct Answer: The purpose of risk management is to maintain control and minimize the risk of failure of product, service or process by using risk abatement plans.

• Question 327:

  List the steps involved in developing a “risk abatement” plan.

  Correct Answer: Check the answer in explanation.

  Team members construct risk abatement plans for risk elements with high and medium risk elements; that is, a risk element score of 16 to 25. Team members identify process, product or service changes to reduce the risk for each high and medium risk element (Xs). Next, team members estimate the risk element score after the risk abatement plan is set into motion. Team members identify the risk element owner and set a completion date for the risk abatement plan to become operational. Finally, team members document the risk abatement plans.

  

  for each risk element and transfer the knowledge to other relevant risk elements. Next, Team members carry out all risk abatement plans. They document the lessons learned team members incorporate the risk abatement plans into a control

  plan for the process owner.

  Team members turn the process control plan over to the process owner. Finally, the process owner continuously turns the PDSA cycle to continue improving the process, product, or service.

• Question 328:

  Explain the purpose of “mistake proofing.” Explain the functioning of mistake proofing.

  Correct Answer: Check the answer in explanation.

  Mistake proofing is used to create “robust steps” in a process or service, or components of a product, denoted as Xs, which are not susceptible to human error. It is used on the critical parameters shown in column 1 in the table below and on the potential failure modes shown in column 2 of the table below. Column 12 in the table below is used to list a mistake proofing solution to potential failure modes (column 2). There are many types of mistake proofing solutions to prevent failure modes, for example, alarms that indicate danger to an operator, color coding medical records by type (green for pediatric and orange for geriatric), or a hand harness for a press to prevent an operator from getting his/her hands crushed in the press. Team members can brainstorm for mistake proofing solutions to potential failure modes, or they can review the literature on mistake proofing techniques.

  

• Question 329:

  Explain why standardization is such an important part of Six SigmA.

  Correct Answer: Standardization of a process creates a known best practice flowchart that can be improved by one or more employees, perhaps a Six Sigma project team. There are multiple variations of a process without standardization. The lack of standardization makes process improvement very difficult because there is not one process to be improved, rather, there are many versions of the same process needed improvement.

• Question 330:

  Explain the function of control charts in the Control phase of the DMAIC model.

  Correct Answer: Control charts are important in the Control Phase of the DMAIC model because they can be used to monitor stability of the Xs and the CTQs. Also, control charts promote process monitoring and work towards the elimination of mass inspection methods.