Six Sigma Green Belt Certification

If one sees no variation, what should they do? A) Try to measure using a finer measure B) Celebrate C) Use a scatter plot D) Use a FMEA

A) Try to measure using a finer measure

In which of the following cases would I definitely have a negative CPK index? A) if the mean is 32.4, and the lower spec is 32.8 B) if the mean is 32.4, and the upper spec is 33.4 C) if the mean is 45.6 and the lower spec is 25.6 D) if the mean is 45.6 and the upper spec is 85.3

A) if the mean is 32.4, and the lower spec is 32.8

A Defect Location Check Sheet: A) is a structured, prepared form for collecting and analyzing data that provides a visual image of the item being evaluated so that data can be collected visually rather than with words. B) Is a tool to separate aliasing from confounding of factors C) Is a time-series run chart for identifying point out of control. D) All of the above

A) is a structured, prepared form for collecting and analyzing data that provides a visual image of the item being evaluated so that data can be collected visually rather than with words.

Prior to performing a capability analysis, it is recommended that the following be true A) the process should be in statistical control B) The process should be independent C) The process should exhibit special cause variation D) The process should be defect free

A) the process should be in statistical control

A risk priority number (RPN) indicates a more severe risk when A) the value is higher B) the value is lower C) the value is zero D) The value is negative

A) the value is higher

Which of the following is NOT an advantage of a stem and leaf plot?

A) typically used for large data sets

Prior to a long-term capability study A) A measurement system evaluation should be conducted B) The process needs to be in statistical control C) Only A D) Both A and B

D) Both A and B

The following is a data set. What is the range? 12.3 13.5 15.2 11.6 18.2 16.5 14.6 12.4 11.5 17.6 A) 6.7 B) 7.7 C) 6.6 D) 6.8

A) 6.7

If x is increased, then y increases somewhat. This type of correlation would be A) A moderate positive correlation B) A moderate negative correlation C) Proof of causation D) No correlation

A) A moderate positive correlation

The Cause/Effect Diagram (also known as the fishbone diagram) focuses the team on: A) A snapshot of the collective knowledge B) CP and CPK C) Restraining forces D) Assignable cause variation

A) A snapshot of the collective knowledge

Which of the following is a GOAL of the tree diagram? A) A tree diagram should be developed systematically through each level to ensure that the team is not quickly jumping to incorrect solutions based on assumptions rather than facts B) The tree diagram moves the team from "specific details" and moves toward "general details" C) The tree diagram has a basic goal to identify the "trunk: - the body of the item being studied D) None of the above

A) A tree diagram should be developed systematically through each level to ensure that the team is not quickly jumping to incorrect solutions based on assumptions rather than facts

Which of the following statements regarding interrelationship diagrams is False?

A) Arrows may flow in two directions

Given the above experimental results, what is the AVERAGE effect of factor B

A) B (-) = 49

The nominal group technique is a variation on which of these other leading Six Sigma tools?

A) Brainstorming

The output of a process results from the combination of input factors such as man, machine, material, methods, measurement and mother nature. This list of input factors is MOST COMMONLY used as an aid in the analysis in which Six Sigma tool? A) Cause-Effect Diagram (also known as the Fishbone diagram) B) Pareto Chart C) House of Quality D) Process Decision Program Chart

A) Cause-Effect Diagram (also known as the Fishbone diagram)

In which phase of DMAIC would the team determine the cope of the project?

A) DEFINE

Which of the following categories would be the first column of the pareto chart? A) First column is "Put on Hold" B) First column is "Slow Response" C) First column is "Transferred 2 times" D) First column in "Inaccurate"

A) First column is "Put on Hold"

All of the following describe TEAM (not the individual team members just the team) responsibilities I. Asking questions II. Carry out assignments between meetings III. Actively listen to others IV. Follow procedures for collecting data A) I and III only B) II and IV only C) III and IV only D) I, II, III and IV

A) I and III only

What are two ways we can improve a process? I, Complete a charter II. Shift the process mean III. Reduce variation IV. Conduct brainstorming sessions A) I and III only B) II and III only C) II and IV only D) I and IV only

A) I and III only

Which of the following would be the most typical tools for the DEFINE phase of DMAIC? I. Kano model II. Pareto Chart III. Control Chart IV. SIPOC V. Affinity Diagram VI. DOE VII. CTQ tree A) I, II, IV, V and VII only B) I, II and VII only C) I, II, and IV only D) All of the above

A) I, II, IV, V and VII only

What is BAD about relying on INSPECTION vs. relying on prevention? A) Inspection is symptom oriented B) Inspection is a data gathering method C) inspection separates the good from the bad D) None of the above

A) Inspection is symptom oriented

All of the following describe the role of the process owner EXCEPT A) Performs statistical analysis B) Supports Six Sigma and Lean techniques to improve processes C) Manages full time operations staff D) Influences and leads employees

A) Performs statistical analysis

Multiple peaks in a histogram illustrates: A) Special-cause variation B) Common cause variation C) Evidence of random variation D) Expected variation

A) Special-cause variation

Which of the following names appropriately describe the "mean" of the x chart portion of the x-bar, R Chart?

A) The grand average (also known as the grand average or the x-double-bar)

The mode is

A) The most frequently occurring value

The beauty of using a steam-and-leaf plot is that... A) The raw data is preserved and displayed B) It can be used when you have less than five data values C) One can calculate the mean and standard deviation using a simple $15 calculator D) It not only shows correlation; it also shows causation

A) The raw data is preserved and displayed

An example of continuous data might be

A) The thickness of a 12 millimeter part

If the Confidence is 99%, how is the significance derived?

B) 100 minus 99

One sigma (or standard deviation) to the RIGHT of center (the mean) in a normally distributed process represents what percentage of the curve? A) 68% B) 34% C) 95% D) None of the choices are correct

B) 34%

To be assured adequate discrimination from the measurement system, one should look for ___ possible units of measure between zero and the upper control limit of the ___ chart. A) 5, Range B) 6, Range C) 5, Averages D) 6, Averages

B) 6, Range

Which of the following is typically a custom-designed form for the purpose of collecting specific data

B) A check sheet

You are managing your first Six Sigma team and realize the team will need to make many of the decisions throughout the DMAIC project. Which description describes the best approach to decision making? A) Majority Rule B) All members must agree to support the decisions derived through consensus C) A Master Black Belt or Black Belt is the most technically competent member in a Six Sigma project. It is really best for he or she to make the decisions for the group. D) Team Compromise

B) All members must agree to support the decisions derived through consensus

The Affinity Diagram results in the following: A) Encourages individual ownership of ideas B) Allows breakthrough thinking to emerge C) Fosters a climate of team decision-making paralysis D) Separates the vital few from the trivial many

B) Allows breakthrough thinking to emerge

Who prioritizes the "Whats" in the House of Quality?

B) Customers

Control Charts A) Control the process B) Distinguish "common cause" from "Special cause" variation C) Manipulates factors at different levels to see their effect on some desire results D) Are a combination of factors that influence the production of a result

B) Distinguish "common cause" from "Special cause" variation

The stem-and-leaf plot is a cross between what two tools? A) Histogram and Control Chart B) Frequency distribution and histogram C) Histogram and run chart D) Run chart and control chart

B) Frequency distribution and histogram

All of the following are associated with the Critical to Quality (CTQ) tree EXCEPT: A) Links customer requirements with specific, measurable characteristics B) Highlights failure modes C) Enables the project team to transform general data into specific data D) Help define specification limits

B) Highlights failure modes

Which of the following tools are closely associated with the Voice of the Customer?

B) House of Quality

Which two rooms of the House of Quality are based on direct input from the customer vs. the project team>

B) I and IV only The Whats and the Competitive Evaluation

All of the following are outputs of the Measure phase of DMAIC EXCEPT A) Baseline data B) Identification of the root cause C) Understanding of the process D) Systematically gathered information

B) Identification of the root cause

Which of the following statements are true? A) Averages vary more than individuals B) Individuals vary more than averages C) Individuals and averages vary about the same amount D) There is no relationship between the amount of variation of averages and individuals

B) Individuals vary more than averages

If the process with common cause variation is frequently adjusted, the result will

B) Likely be a process that is highly responsive to customer specifications

Which of the following tools directs the teams attention to the most frequently occurring or most costly area of concern?

B) Pareto Chart

Which of the following types of matricess show two sets of items compares to a common third set?

B) T shaped Matrix

All of the following are typical characteristics of the Forming Stage of Team Development EXCEPT A) Team members become familiar with each other B) Team members priorities collaboration and consensus building C) Team member are excited about the task buy cautious D) Team members are unclear about their fit within the team

B) Team members priorities collaboration and consensus building

All of the following statements regarding FMEAs are true except A) The FMEA is widely recognized as a valuable reliability tool B) The FMEA focuses more on what can go wrong rather than the effect of the failure C) The FMEA can evaluate both product and process reliability D) The FMEA can be conducted at different times in the product lifestyle

B) The FMEA focuses more on what can go wrong rather than the effect of the failure

What is an advantage of using a stem and leaf plot over a histogram? A) It uses averages instead of individual measurements, and averages vary less than individuals B) The raw data is preserved and presented C) It makes the underlying sources of variation visible D) It accounts for a shift in the mean

B) The raw data is preserved and presented

The Kano model is used to: A) To separate the expected from the unexpected B) To understand the customer market C) Determine cause and effect D) Precontrol and existing process

B) To understand the customer market

A critical activity occurs after every phase in DMAIC. This activity is designed, among other things, to review the team's progress and obtain a go or no-go decision on the project. Which of the following best describes this activity? A) Plan-Do-Check-Act (or PDCA) B) Tollgate review C) Project charter review D) Hypothesis Testing

B) Tollgate Review

What does a negative CPK indicate?

B) the process average is out of specification

Throughput time is an example of: A) A "Nominal is best" quality characteristic B) A "Larger is better" quality characteristic C) A "Smaller is better" quality characteristic D) A "Dynamic is better" quality characteristic

C) A "Smaller is better" quality characteristic

All of the following are outputs of the Control phase of DMAIC EXCEPT: A) Documentation B) Training of employees in new method C) A more focused problem statement D) System for monitoring

C) A more focused problem statement

The outputs of the define phase include

C) A statement of the intended purpose

A sample from the process

C) Are used to estimate characteristics of a population

What is true about a process

C) Both A and B A combination of factors that influence some result AND The manipulation of various factors at different levels to see their effect on some desired result

Which of the following principles were associates with W Edwards Deming?

C) Both a and B 14 obligations of top management and seven deadly diseases

Data from a process shows the following number of defects from 15 samples. Which control chart should be used? Defects = 4 8 3 4 1 5 8 7 3 2 6 7 5 9 5 Samples size = 90

C) C

Control limits will NOT tell you

C) Customer limits

Which of the following is generally not a method for evaluating the voice of the customer? A) Kano Diagram B) Critical to quality tree C) Failures Modes and Effect Analysis (FMEA) D) Surveys

C) Failures Modes and Effect Analysis (FMEA)

The range chart of the x-barR chart monitors ... i. Dispersion ii. Central tendency of the data iii. Adequate discrimination iv. Subgroup average v. Range of the subgroups A) I only B) I and III only C) I, III, and V only D) I, III, IV and C only

C) I, III and V only

To create a flowchart, team should do the following

C) Identify all major activities in the process

The project scope statement does all of the following EXCEPT A) Identifies the boundaries of the team's work B) Identifies the start and end points of the process under analysis C) Includes team member assignments D) Clarifies what is outside of the scope of the project

C) Includes team member assignments

The Pareto Chart is one of the most widely used improvement tools for all the reasons except

C) It is a primary tool for continuous data analysis

Which of the following tools allows a team to A.) Prioritize a long list of ideas without creating a win-lose situation in the teams and B.) Allows the teams to separate the critical few items from a long list of ideas? A) PDPC B) Fishbone Diagram C) Multi-voting D) CTQ Tree

C) Multi-voting

Which of the following would BEST describe the statement, that as the training hours increase (X), the number of employee errors (Y) falls? A) A sawtooth relationship B) Positive correlation on a scatter diagram C) Negative correlation on a scatter diagram D) A proven cause-effect relationship

C) Negative correlation on a scatter diagram

Which of the following tools would you NOT use to illustrate a normal distribution? A) Frequency Distribution B) Histogram C) Pareto Chart D) Bell curve

C) Pareto Chart

What statement is true of a scatter diagram? A) Conclusion on a scatter diagram implies causality B) A Scatter Diagram predicts cause and effect C) Shows the strength of relationship between two variables D) As x increases, y decreases - shows a positive correlation

C) Shows the strength of relationship between two variables

Given a Cp of 1.1, which of the following statements is true? A) The process is demonstrating long-term capability B) No defects should be expected C) The process is capable but not acceptable D) The process is capable and acceptable

C) The process is capable but not acceptable

Which of the following statements is NOT party of the propose of a control chart?

C) Tool to meet customer specifications

All of the following describe the role of project champion except A) Helps remove obstacles for the team B) Selects Black Belts and Green Belts for the project C) Trains Black Belts and Green Belts D) Manages lessons learned

C) Trains Black Belts and Green Belts

Poka yoke strategies may take various forms. Which of the following is NOT a poka yoke strategy A) Software spelling checker B) Virus Software C) Warranty D) Color Coded wiring connectors

C) Warranty

If you had a normally-distributed process with some average (x-bar) and some standard deviation (s), how would you find the expected percentage that would be above (or below) a certain point of interest? A) You would calculate the population arithmetic mean B) You would calculate the population sigma C) You would calculate the Z score and then you would look up in the Z table to see what percentage would be expected above (or below) a certain point D) You would use a fractional factorial with the resolution IV

C) You would calculate the Z score and then you would look up in the Z table to see what percentage would be expected above (or below) a certain point

What are the characteristics of good project chart objectives? i. measurable ii. Time Bound iii. Specific iv. in order from largest to smallest v. achievable vi. realistic A) i, iii, iv and vi only B) ii and iv only C) i, ii, iii, v and vi only D) All of the above

C) i, ii, iii, v and vi only

What should be done with assignable-cause variation? A) Leave the process alone B) Try to understand the source C) Eliminate the source D) Both B and C

D) Both B and C

According to popular Six Sigma philosophy,,,

CP and CPK should be greater than 1.50

Which of the following is NOT categorized as assignable cause on a control chart?

D) A point out of customer specifications

Which tool would the team use when chaos exists, the team is overwhelmed by a surplus of ideas, breakthrough thinking is needed, or common themes must be identifies?

D) Affinity diagram

Which tool would the team use when they need to identify major themes from a large number of ideas, opinions or issues? A) Focus group B) Value stream map C) Flow chart D) Affinity diagram

D) Affinity diagram

In this set of numbers (35, 46, 34, 29, 33) which measure of central tendency is best to use? A) Mean B) Arithmetic Mean C) Average D) All of the above

D) All of the above

Which of the following are valid methods for identifying customer needs and requirements? i. Written Surveys ii. Focus Groups iii. Phone Interviews iv. Internet Polls v. 800 phone numbers vi. Warranty Records A) i, ii, iii, v and vi only B) i and ii only C) i and iii only D) All of the above

D) All of the above

Which of the following characteristics are true for flowcharts? I Illustrates complexity II Illustrates problem areas III Illustrates redundancy or duplication IV Illustrates unnecessary steps V Illustrates where standardization may be possible VI Compare and contrasts the current with ideal flow VII Help employees understand the process

D) All of the above

Which of the following characteristics of Six Sigma has helped Six Sigma become of the the leading management strategies to improve business results? I Drive by top leadership II Integrated with business strategies III Bottom line cost benefit IV Disciplined approach V Well defined roles and infrastructure VI Statistical and data-based decisions VII Customer and process focused

D) All of the above

Which of the following describes stakeholders for a Six Sigma Project? I Process owners affects by the project II People who can influence the project III Managers whose budgets will be affected by the project IV Customer who purchase the product V Suppliers who provide materials for the process VI Your organizations financial department

D) All of the above

When would you use a DFSS methodology? A) When a business wants to reduce variation in a process B) When the team has a broken process that they want to fix C) After a process has been designed, tested, and implemented D) An organization has chosen to redesign a process

D) An organization has chosen to redesign a process

What should be done with expected variation? A) Process settings should be continuously adjusted toward the nominal B) The variation should be reduces C) Continue monitoring the process for assignable-cause variation D) Both B and C

D) Both B and C

In which phase of DMAIC would you LEAST LIKELY use a Pareto Chart? A) Define B) Measure C) Analyze D) Control

D) Control

Which of the following statements DO NOT describe the role of control limits? A) Identifies if the process is operating as expected B) Identifies if corrective action is needed C) Defines limits of random variation D) Defines the Voice of the Customer

D) Defines the Voice of the Customer

The measure phase of DMAIC includes each of the following except... A) Designing data collection plans B) Collecting data C) Using the data to describe the process D) Identifying the root cause

D) Identifying the root cause

Which of the following do NOT belong in a project charter? I. Customer requirements II. Project scope III. Project success criteria IV. Team members V. Project deadlines A) III only B) III and IV only C) III and V only D) None of the above

D) None of the above

A normally distributed process exhibited the following... Mean: 59 Standard Deviation: 3 USL: 70 LSL: 40 Which of the following is correct? A) PPK = 1.45 B) PPK = 1.56 C) PPK = 2.11 D) PPK = 1.22

D) PPK = 1.22

All of the following describe a tollgate review EXCEPT A) Formal review of the project's progress at major milestones B) Typically conducts with the team and their project champion C) Summarizes what the team has learned that point D) Recommended only at the end of the project

D) Recommended only at the end of the project

You have asked to inspectors to measure a part to determine if they come up with the same measurement. This is an example of...

D) Reproducibility

Which of the following tools are considered to be a tool you use just prior to creating a control chart?

D) Run Chart

Which of the following responsibilities are typically NOT part of the role of the project champion? A) Eliminates barriers B) Ensures availability of resources C) Communicates progress of team to upper management D) Supervises daily process operations

D) Supervises daily process operations

The project team lead told you that he wanted to measure short-term capability. His goal in doing so was to determine if the process was meeting customer requirements. He calculated Cp and Cpk and got 1.5 and 1.3, respectively. However, the team lead couldn't remember if this meant the process was meeting customer requirements or not. What would you tell him? A) The process is capable, but not acceptable B) The process is not capable nor acceptable C) The process is stable D) The process is capable, but not necessarily acceptable

D) The process is capable, but not necessarily acceptable

A run chart does all of the following EXCEPT:

D) Utilizes statistically based control limits

Which of the following terms and symbols are Measure of Dispersion? I. Standard deviation II Sigma III o with - IV S V Range

D) all of the above

You are evaluating the steps in a core process using an FMEA. The scales to rate severity, occurrence and detection have been created and agreed upon by the team. How would you use the FMEA to prioritize the critical process steps

Multiple I, II and III (IxIIxIII)

A process that is capable indicates

The process variation is less than the width of the specification window

If management will only budget to run a maximum of 10 experimental trials (2 levels) but demands that the experiment is at resolution IV or greater (meaning a 1/2 factorial_< what is a viable choice for the team?

V) Experiment on 4 factors for one set of trials