Green Belt - Exam Practice Questions and Answers with Complete Solutions Graded A 2024

What is the definition of a defect? A) A product/process that exhibits variability. B) A product/process that does not perform as well as the competition. C) A product/process that does not meet customer requirements for use. D) A product/process that is not reliable. E) A product/process that requires extra processing. - Answer C What is the primary approach employed by Lean Six Sigma to reduce the number of defects? A) Add inspection to isolate the customer from process instability. B) Reduce process variability at the source through redesign or process controls. C) Revise specifications to better reflect customer expectations. D) Provide incentives to the workforce to eliminate defects. E) Educate customers to manage product/process expectations. - Answer B National Fiduciary Guaranty Bank has been losing market share in home mortgage lending over the last several years. Surveys indicate very low customer satisfaction ratings for the home mortgage process. The bank recently chartered a Lean Six Sigma team to address the performance problem. The team has examined several process factors, including loan pricing, credit requirements, loan closing cycle-time and employee training as they relate to customer satisfaction and new loan volume. Which of the following are potential key process inputs in the bank's home mortgage business? A) Customer Satisfaction, Credit Requirements, Historical Loan Closing Cycle-Time B) Loan Pricing, Employee Training, Customer Satisfaction C) Loan Pricing, Credit Requirements, Employee Training D) Credit Requirements, New Loan Volume, Customer Satisfaction E) Historical Loan Closing Cycle-time, Customer Satisfaction, Employee Training - Answer C The expression Y=f(X) is often used to describe the relationship between process inputs and the process output. Which description of Y=f(X) is most accurate? A) The output of a process (X) is a function of the process inputs (Y). B) More process inputs (X) improve the function of the process output (Y). C) Reducing the function of a process input (X) will increase process output (Y). D) More process inputs (Y) improve the function of the process output (X). E) The process output (Y) is a function of the process inputs (X) - Answer E What is the primary purpose of Lean Six Sigma? A) Develop clear quality standards that can be understood by everyone. B) Provide better training to the people involved in process improvement efforts. C) Improve profitability and/or other key performance metrics. D) Determine the number of opportunities for a defect to be produced. E) Provide a better structure for process improvement. - Answer C What is the strongest guiding force of Lean Six Sigma decision-making? A) Experience of process owners. B) Historical best practices. C) Opinions of senior management. D) Data and statistical analysis. E) Benchmarking studies of the competition. - Answer D When Six Sigma and Lean Methods are used together, they complement each other. As a general rule, what are the primary areas of focus for both Six Sigma and Lean? A) Six Sigma - Reduce Complexity; Lean - Improve Quality B) Six Sigma - Improve Process Flow; Lean - Reduce Process Inputs C) Six Sigma - Control Process Cycle Time; Lean - Reduce Process Variability D) Six Sigma - Increase Process Output; Lean - Identify Key Inputs E) Six Sigma - Improve Quality; Lean - Reduce Process Cycle-time - Answer E Consider a company that provides two services using the same basic process. Service A is relatively complex, and can be defective in 15 different ways. Service B is relatively simple, with only 5 possible defects. The company produces 500 units of A and 1000 units of B. A total of 27 defects are experienced. What is the DPMO (Defects Per Million Opportunities) for the overall process? A) 18,000 B) 2,160 C) 18 D) 216 E) 457 - Answer B A company generates 22,700 Defects Per Million Opportunities. What is the Sigma level performance of the company? A) 4.0 B) 3.7 C) 1.2 D) 2.8 E) 3.5 - Answer E How would you categorize the cost of internal product/process testing? A) External failure cost B) Prevention cost C) Internal failure cost D) Appraisal cost E) Development cost - Answer D