Six Sigma Green Belt Verified Questions And Answers Graded A+ 2023 The statistics that summarize a population are referred to as a. categorical statistics b. descriptive statistics c. probabilistic statistics d. control statistics ✅ b. descriptive statistics Which of the following measures is increased when process performance is improved? a. Variability range b. Capability index c. Repeatability index d. Specification limits ✅ b. Capability index Which of the following tools can be used to identify and quantify the source of a problem? a. Affinity diagram b. Control chart c. Pareto chart d. Quality function deployment ✅ c. Pareto chart A correlation analysis is used to provide a numeric value for which of the following types of relationships between two variables? a. Random b. Linear c. Curvilinear d. Causation ✅ b. Linear Which of the following tools is used to translate broad requirements into specific requirements? a. A quality control plan b. The theory of constraints (TOC) c. A critical to quality (CTQ) tree d. A process flowchart ✅ c. A critical to quality (CTQ) tree Which of the following tools is used extensively in quality function deployment (QFD)? a. Affinity diagram b. Matrix diagr am c. Cause and effect diagram d. Activity network diagram ✅ b. Matrix diagram Which of the following control charts is used to monitor discrete data? a. p b. I&mR c. Xbar d. Xbar and R ✅ a. p Which of the following shapes is used to present a termination point in a flowchart? a. Rectangle b. Diamond c. Arrow d. Oval ✅ d. Oval For a normal distribution, two standard deviations on each side of the mean would include what percentage of the total population? a. 95% b. 68% c. 47% d. 34% ✅ a. 95% Which of the following is a commonly accepted level for alpha risk? a. 0.05 b. 0.50 c. 0.70 d. 0.95 ✅ a. 0.05 When the sampling method used creates a difference between the result obtained from the samp le and the actual population value, the difference is known as a. correlation b. precision c. accuracy d. bias ✅ d. bias Which of the following is an example of mistake -proofing? a. Using an Xbar and R chart to prevent errors b. Using 100% inspection to detect and contain defects c. Using color coding as an error signal d. Having the team that created the errors repair them ✅ c. Using color coding as an error signal Which of the f ollowing is the key objective of a six sigma project? a. Developing detailed control charts for critical processes b. Developing a matrix to understand the how's and what's of a problem process c. Reducing variation in critical processes d. Reducing inves tment costs while improving output quality ✅ c. Reducing variation in critical processes Which of the following tools is used to identify potential events and contingencies for an implementation plan? a. PERT chart b. Process decision program chart c. Fishbone diagram d. House of quality ✅ b. Process decision program chart Which of the following measures is used to show the ratio of defects to units? a. DPU b. DPO c. DPMO d. PPM ✅ a. DPU Which of the following terms is used to describe the risk of a type I error in a hypothesis test? a. Power b. Confidence level c. Level of significance d. Beta risk ✅ c. Level of significance Positional, cyclical, and temporal variations are most commonl y analyzed in a. SPC charts b. multi -vari charts c. cause and effects diagrams d. run charts ✅ b. multi -vari charts In order for value flow analysis to be effective, a team must take which of the following steps first? a. Define the value stream b. Elim inate backlogs in the value stream c. Identify overlapping functions in the value stream d. Identify specific work practices within the value stream ✅ a. Define the value stream When an inspection process rejects conforming product, what type of error is being made? a. α b. β c. σ d. H sub 0 ✅ a. α The critical path for a project is best described as the a. sequence of steps with the highest costs b. tasks in the project that have the highest risk of failure c. sum of the tasks with the shortest time requirements d. longest path from the start to the completion of the project ✅ d. longest path from the start to the completion of the project Statist ical process control (SPC) is best defined as the use of a. Pareto charts to understand and control a process b. inputs to control critical and complex processes c. statistical methods to identify and remove manufacturing errors d. statistical methods to understand and control a process ✅ d. statistical methods to understand and control a process A measurement system analysis is designed to assess the statistical properties of a. gage variation b. process performance c. process stability d. engineering t olerances ✅ c. process stability When calculating the C sub P index, what does the standard deviation represent in the formula C sub P = (USL -LSL)/6sigma a. The tolerance interval b. The confidence interval for the result c. The range of the process d. The variance of the index ✅ a. The tolerance interval After the customers and their needs are identified, what is the next step in collecting Voice of the Customer (VOC) data? a. Refine customer needs
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