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Various six sigma tools and techniques, including affinity diagrams, nominal group technique, 5 why, check sheets, flow diagrams, force-field analysis, spc charts, multi-vari charts, cause and effect diagrams, run charts, functional requirements, control charts, hypothesis testing, kaizen, anova, failure mode and effects analysis, cycle time, total productive maintenance, confidence intervals, just-in-time, poka-yoke, measurement system analysis, pareto analysis, process maps, lean tools, and more. A comprehensive overview of these six sigma tools and their applications in improving processes and reducing defects.
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Which of the following tools should be used when a team is generating and prioritizing a list of options that include highly controversial issues? A.) Brainstorming B.) Affinity Diagrams C.) Nominal group technique D.) 5 Why C.) Nominal group technique The primary factor in the successful implementation of six sigma is to have A.) necessary resources B.) support and leadership of top management C.) explicit customer requirements D.) comprehensive training guide B.) support and leadership of top management Which of the following tools would be most appropriate for collecting data to study the symptoms of a problem? A.) Check sheet B.) Flow diagram C.) Force-field analysis D.) Activity network diagram A.) Check sheet Positional, cyclical, and temporal variations are most commonly analyzed in A.) SPC charts B.) multi-vari charts C.) cause and effect diagrams D.) run charts B.) multi-vari charts
The most important aspect of functional requirements is that they A.) describe a single, measurable performance B.) describe how a product or service should operate C.) be traceable to the voice of customer D.) provide upper and lower performance limits C.) be traceable to the voice of customer Which of the following control charts is the most appropriate for monitoring the number of defects on different sample sizes? A.) u B.) np C.) c D.) p A.) u Which of the following is most important in evaluating and understanding design intent? A.) Identifying the functional requirement B.) Brainstorming failure modes C.) Conducting computer simulations D.) Developing FMEA A.) Identifying the functional requirement If a process follows an exponential distribution with a mean of 25, what is the standard deviation for the process? A.) 0. B.) 5. C.) 12. D.) 25. D.) 25. Which of the following activities is value-added? A.) Setup B.) Process C.) Storage D.) Inspection B.) Process
A.) Cycle time Which of the following is the best way to enhance the long-term availability of a machine? A.) Machine repair B.) Total productive maintenance C.) Computerized SPC systems D.) Increased operator training B.) Total productive maintenance Typically, which of the following activities is done earliest in the formation of a project team? A.) Select the team B.) Identify the objective C.) Identify the sponsor D.) Allocate the resources B.) Identify the objective A black belt is developing a failure modes and effects analysis (FMEA) for the hamburger preparation station in a fast-food restaurant. The following ratings were developed for the low- heat temperature failure mode. Severity= Occurrence= 2 Detection= What is the risk priority number (RPN) for this FMEA? A.) 4 B.) 6 C.) 12 D.) 18 D.) Which of the following statements is true about the theory of constraints? A.) It views a system in terms of discrete processes. B.) Most constraints are physical. C.) Most constraints are the result of policies. D.) It focuses on continuous improvement. C.) Most constraints are the result of policies. Which of the following describes the 95% confidence interval of a 20% absentee rate in a department with 30 people?
A.) 6% to 34% B.) 8% to 32% C.) 13% to 27% D.) 17% to 23% A.) 6% to 34% A system that delivers products or services at the correct time and in the correct quantities is referred to as A.) takt time B.) kaizen C.) just-in-time D.) single-piece flow C.) just-in-time Poka-yoke is best defined as A.) improving machine efficiency B.) reducing field failures to virtually zero C.) capturing the voice of the customer D.) preventing controllable defects D.) preventing controllable defects A measurement system analysis is designed to assess the statistical properties of A.) gage variation B.) process performance C.) process stability D.) engineering tolerances A.) gage variation Which of the following best describes a controlled variable whose influence on a response is being studied? A.) Replicate B.) Version C.) Level D.) Factor D.) Factor
A company has installed a system that prevents orders with incorrect information from being forwarded to production scheduling. This is an example of which of the following lean tools? A.) Standard work B.) Kanban C.) Poka-yoke D.) Visual factory C.) Poka-yoke After the major headings of a tree diagram have been broken into greater detail, what is the next step that should be taken? A.) Assemble the right team B.) Review the diagram for logical flow and completeness C.) Revise the problem statement D.) Choose the tree diagram goal statement B.) Review the diagram for logical flow and completeness A six sigma team has been formed to improve an existing process. Which of the following tools should the team use first to gain a clear understanding of the current process? A.) Flowchart B.) Pareto chart C.) Process FMEA D.) Latin square DOE A.) Flowchart Which of the following techniques dramatically shortens changeover times? A.) Continuous flow B.) Standard work C.) Work in process (WIP) D.) Single minute exchange of dies (SMED) D.) Single minute exchange of dies (SMED) Correction, over-production, inventory, and motion are all examples of A.) waste B.) 5S target areas C.) noise D.) value-added activities A.) waste
A store uses signs at specific points in its storage area to indicate when products need to be ordered. This practice is an example of A.) kanban B.) poka-yoke C.) check points D.) hoshin A.) kanban A method that changes data without significantly reducing accuracy or precision is known as A.) bias judgement B.) statistical efficiency C.) blocking D.) coding D.) coding A company's accounts payable department is trying to reduce the time between receipt and payment of invoices. If the team has just completed a flowchart of the process and identified the critical steps, which of the following tools should be used next? A.) Fishbone diagram B.) Scatter diagram C.) Box and whisker plot D.) Histogram A.) Fishbone diagram When a team consists of five black belts and eight quality engineers, how many unique meetings could be held consisting of one black belt and two quality engineers? A.) 40 B.) 80 C.) 140 D.) 280 C.) 140 The primary reason that most companies implement six sigma is to A.) reduce defects B.) improve processes
Which of the following tools is used extensively in quality function deployment (QFD)? a) Affinity diagram b) Matrix diagram c) Cause and effect diagram d) Activity network diagram Matrix Diagram Which of the following measures is used to show the ratio of defects to units? a) DPU b) DPO c) DPMO d) PPM DPU Which of the following is a commonly accepted level for alpha risk? a) 0. b) 0. c) 0. d) 0. . 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 A critical to quality (CTQ) tree Typically, which of the following actions is NOT used to reduce process cycle time? a) Analyzing current processes b) Reducing queue times
c) Setting scheduling priorities d) Implementing activity-based costing Implementing activity-based costing Which of the following terms is used to describe the risk of a type I error in a hypothesis test? (asked 3 times) C. Level of significance One characteristic of attributes data is that it is always a) continuous b) discrete c) expensive to collect d) read from a scale of measurement Discrete Which of the following is most important in evaluating and understanding design intent? Identifying the functional requirement The process of having a six sigma team develop a problem statement helps the team to? a) agree on key dates associated with completing major project phases b) achieve consensus and ownership of the process c) determine solutions d) determine how often it should meet B. Achieve consensus and ownership of the process A change agent is responsible for helping the organization do which of the following? Overcome fear of the unknown Which of the following will have the most influence on consumers' perception of quality? Service and repair policies Which one of the following is not a Process Improvement Methodology? Kano Model
Mode __________________determines the nature of relationship which would help us to make predictions. A) Correlation Analysis B) Regression Analysis C) Stability Analysis D) Capability Analysis Regression Analysis The Graph which helps to identify and prioritize problems to be solved? A) Control Chart B) Histogram Chart C) Fish Bone Graph D) Pareto Chart Pareto Chart Quality and the Critical-to-Quality (CTQ's) are both subjective terms that are defined by the _______________. Customer One of the most popular measures of variability in a data set or population is ______________. Standard Deviation You are a Project Manager wanting to compare on time delivery (%) of Team Leads across 4 teams, your choice of technique would be? A) Hypothesis Testing B) Histograms C) Pareto chart D) Box Plots Box Plots Voice of Customer is? A) A table to collect raw voices of Customers
B) A software tool to automatically update customer feedbacks C) First used in Measure phase D) All of the above A) A table to collect raw voices of Customers Which of the following tools has the highest resolution? A. Feeler gauge B. Gage block C. Caliber D. Micrometer Micrometer Following have been exponents of Quality evolution except: A. Juran B. Philip Crossby C. Wockhardt D. Deming C. Wockhardt An observation above upper Control limit is concluded as? A. Process special cause variation B. Process common cause variation C. Process performance D. No variation A. Process special cause variation Three Standard Deviations on left and right side of the mean would include what % of the total data points in Normal Distribution? A. 68 % B. 97 % C. 99 % D. 95 % C. 99 %
True/False: If special causes assigned in the process variations, then the UCL and LCL would be recomputed without removing those outliers. False The Control Chart would help us to determine whether the process is: A. Stable B. Capable C. Correlation D. Prediction A. Stable Which of the following is NOT an advantage of using a median? A. Extreme values do not affect the median as strongly as they affect Mean B. A median can be calculated for qualitative descriptions C. Median is easy to understand D. Median can be calculated even for open-ended classes D. Median can be calculated even for open-ended classes The measure which helps to understand the spread of variation is called as _____. A. Quartile 1 B. Cpk C. Mode D. Variance D. Variance Ratio and Interval Scale of measurements are based on _____ type of data: A. Discrete & Attribute B. Discrete & Continuous C. Variable & Continuous D. Continuous & Attribute C. Variable & Continuous
The Pareto Graph is used to represent _____ scale of measurement. A. Nominal B. Ordinal C. Ratio D. Interval A. Nominal ____ helps to understand Process behavior for parametric distribution. A. Median B. Range C. Mean D. Variance C. Mean Which of the following Six Sigma tool qualifies Voice of Customer: A. Kano Model B. Control charts C. Regression analysis D. Value stream mapping A. Kano Model Which tool is best to utilize to assist in determining solution priorities? A. Cost Benefit Analysis B. Control Plan C. FMEA D. Response Plan C. FMEA A single data point falling outside a Control Limit is most likely representative of ______________. A. Common-cause Variation Internal Failure Costs