Overview & Define
DFSS
Analyze
Improve & Control
Project Management
100
This yield metrics most accurately reflects quality throughout a process. A. Rolled throughput yield B. First time yield C. Throughput yield D. Final yield
What is A. Rolled throughput yield (Since rolled throughput yield is calculated based on the throughput yield or defects per opportunity at each step in the process.)
100
The best area to apply Process Failure Modes and Effects Analysis (PFMEA) is: A. Procurement B. Components C. Subsystems D. Main systems
What is A. Procurement (Process FMEA (PFMEA) applications include assembly, machines, work stations, gages, procurement, training of operators, and tests.)
100
The best control chart to be kept on the temperature of a process recorded each day is: A. Individuals (I) B. c chart C. p chart D. u chart
What is C p chart.
100
The expected percent defective that will be produced if the natural variation in a process is normally distributed, stable, centered within the specification limits and has the same width as the specification limits is: A. 0.27 B. 0.66 C. 0.97
What is A. 0.27 (Based on a normal distributed process & using Cp of 1.00 and a Cpk of 1.00 the process spread & tolerance would both be 6 sigma which means parts will be produced with in Spec Limits of 99.73% with .135 outside each tail of total of .27% total defective.)
100
'Critical to Quality' is best described as: A. What you manage and measure in the process that has a direct effect on performance of the product or service in the hands of a customer B.The application of a quality management system in managing a process to achieve utmost customer satisfaction C. systematic, independent examination and review to determine whether quality activities and related results comply with planned arrangements
What is A. What you manage and measure in the process that has a direct effect on performance of the product or service in the hands of a customer
200
This is critical to the success of a Six Sigma project selection process. A. The Black Belt's speciality and skill level B. The financial impact of the project C. Criteria accepted by the executive team D. The timeline of the project
What is C. Criteria accepted by the executive team (Successful projects need top management support & buy in)
200
The DMADV approach is appropriate for: I. Product/process not in existence needs to be developed. II. Product/process exists & optimized but doesn't meet customer and/or business needs III. Product/process exists & meets needs but not optimized. A. I only B. I & II C. I & III D. I, II & III
What is B. I & II (A DMADV approach is appropriate instead of the DMAIC approach when a product or process is not in existence or current process doesn't meet customer needs)
200
Statistical technique that allows estimates about population parameters with a known level of certainty is: A. Control limits B. Confidence Intervals C. Specification Limits D. Action Limits
What is B. Confidence Intervals (Confidence Intervals are a statistical technique that allows estimates about population parameters with a known level of certainty.)
200
Given that a process's natural variation is +/- 3sigma & the process is centered within the spec limits, the defects in parts per million if spec limts are set at +/- 4sigma would be: a. 86 ppm b. 64 ppm c. 33 ppm
What is b 64 ppm.
200
During the process of trying to discover causes for field failures, a review of the individual and summarized data should include a/an A. ANOVA B. P chart C. Pareto Chart
What is A. ANOVA
300
Does not represent benefits of capturing the lessons learned before project closure: A. Providing closure to the team experience B. Quantifying project savings C. Recognizing key project successes D. Recognizing key project failures
What is B. Quantifying project savings
300
Design for Six Sigma Review at the end of each phase are common to: A. Only to Identify-Design-Optimize-Validate methodology B. Neither IDOV or DMADV employ phase reviews C. Both IDOV and DMADV employ phase reviews.
What is C. Both IDOV and DMADV employ phase reviews.
300
In the hypothesis test for means, the test statistic is in the reject region, you would then: A. Reject the mean B. Reject the null hypothesis C. Accept the null hypothesis D. Do not reject the null hypothesis
What is B. Reject the null hypothesis The result is statistically significant so the null hypothesis can be rejected.
300
Experimental method used to determine primary pattern (positional, cyclical or temporal pattern) of variation in a process or project. A. Analysis of Variance B. Multi-Vari C. Full Factorial D. Orthogonal Array
What is B. Multi-Vari (A multi-vari design is used to identify variation related to positional, cyclical and temporal factors in the process/product)
300
The best tool for tracking the progress of critical project activities is A. PERT chart B. Critical Path Method C. Gantt chart
What is C. Gantt Chart Gantt chart is very effective at showing key project tasks and progress toward project completion.
400
Quality Function Deployment is typically used first in the following phase of the Identify, Define, Develop, Optimize, Verify (IDDOV) DFSS methodology A. Identify and Define Opportunity B. Develop Concepts C. Optimize Design
What is A. Identify and Define (QFD is used throughout the Design For Six Sigma process. As such, it will first appear in the first stages of any DFSS process)
400
The success of design for Six Sigma Programs is estimated by A. Prototype performance B. Process Sigma C. Scorecards
What is C. Scorecards DFSS estimates product sigma using, as much as possible, "pencil and paper." The Scorecard is the tool for doing this.
400
The following statement about hypothesis tests for means is false A. This is a two-tail test when Ha has the ≠ sign B. This is a left-tail test when Ha has the < sign. C. This is a right-tail test when Ha has the > sign D. This is a one-tail test when Ha has the ≠ sign.
What is D. This is a one-tail test when Ha has the ≠ sign. (One-tail tests exist for < or > relationships.)
400
The most important step when using statistical methods for data analysis is: A. Determine the averae for the distribution B. Determine the standard deviation for the distribution C. Determine the shape of the distribution D. Determine if the process is in statistical control
What is C. Determine the shape of the distribution (The shape of the distribution is key since it determines what statistics are used to describe the distribution. All distributions do not use the same descriptive statistics (Weibull, exponential, etc. distributions do not use the standard deviation).
400
The best tool for discovering relationships between two groups of ideas is a: A. Force field analysis B. Matrix diagram C. Prioritization matrix D. Process Decision Program Chart
What is B. Matrix diagram A matrix diagram will effectively uncover relationships between two groups of ideas.
500
A Six Sigma project team has very limited time with an executive champion in an Analyze phase review. The following tool represents the best combination of quantifiable data and visual display to justify the team’s selection of Critical Xs from Potential Xs. A. Pareto chart B. Cause-and-Effect diagram C. Analysis-of-Variance (ANOVA) table D. Quality Functional Deployment matrix
What is A. Pareto chart
500
In DFSS the following are not included in the four phases of QFD. A. Marketing Planning B. Product Planning C. Manufacturing Process Planning D. Production Planning
What is A. Marketing Planning The four phases of QFD are product planning, design planning, manufacturing process planning and production planning.
500
In a hypothesis test for means, the following statement is false: A. When the population standard deviation is unknown and the sample size is 20, the t-test would be used. B. When the population standard deviation is known and the sample size is 60, the z-value would be needed. C.When the population standard deviation is known and the sample size is 60, the t-test would be used. D.The t-test can be applied to one-tail or two-tail tests.
What is C.When the population standard deviation is known and the sample size is 60, the t-test would be used. This is false as the t-test is suitable for smaller samples. Z would be more appropriate.
500
The hypothesis test used to determine if the variance calculated from machine #1 data on Shift A is the same as on machine #1 during shift B is: A. t-Test B. F-Test C. Chi-Square Test D. z-Test
What is B. F-Test *An F-test compares the variance from one population (Shift A) to the variance from another population (Shift B).
500
The best tool for understanding project enablers and obstacles is A. Force Field Analysis B. Matrix Diagram C. Prioritization Matrix D. Process Decision Program Chart (PDPC)
What is A. Force Field Analysis Force field analysis compares impediments and aids to project success.
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