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1.
Which statement correctly captures the meaning of
non-value-adding
?
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2.
Workers are doing too much turning, bending over, and walking from one place to another. Which letters of DOWNTIME best capture problems like these?
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3.
Which improvement strategy will have the greater impact?
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4.
What is a
value stream
?
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5.
Kaizen events are sometimes used in the LSS projects. Which of these is
NOT
a characteristic of Kaizen Events?
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6.
Which of these is
NOT
part of the preparation for a typical Kaizen Event?
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7.
Which of these is a common pitfall of typical Kaizen Events?
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8.
A workflow consists of three main steps. The yields for each of these steps are 99%, 98%, and 97%. Which of the following values is closest to the overall quality level (rolled throughput yield)?
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9.
Which of these following statements is
NOT
true?
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10.
A company wants to use DPMO to track product quality. Which of the following issues would make that impossible?
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11.
What is the primary responsibility of a LSS Champion?
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12.
Which of these is
NOT
a reason to combine Lean and Six Sigma as a single improvement infrastructure?
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13.
Which of these is
NOT
an essential element of LSS?
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14.
Which of these initiatives has the
LEAST
overlap with Lean Six Sigma?
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15.
Which of these is
NOT
an important Top Management role in LSS deployment?
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16.
Which of the following is
NOT
a good reason to limit the number of LSS projects in process?
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17.
Which of the following is
NOT
a deliverable of the Measure phase of DMAIC?
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18.
Which of these is
NOT
a deliverable of the Improve phase of DMAIC?
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19.
Which of the following is
NOT
a deliverable of the Control phase of DMAIC?
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20.
Which of these is
NOT
a requirement for all LSS projects?
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21.
Which of these is
NOT
a LSS project?
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22.
Which project is
MOST
likely to benefit from Lean concepts and methods?
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23.
Which of these statements about cost-of-waste analysis is
NOT
true?
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24.
What is the recommended team process for prioritizing a list of candidate LSS projects?
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25.
Which of these elements does
NOT
belong in a project charter?
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26.
Which of these elements does
NOT
belong in a project charter?
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27.
Which of the following is
NOT
an acceptable project metric? (RMA is a Return Material Authorization.)
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28.
You have quantitative measurements on N parts or transactions. Which of these statistics is
NOT
an acceptable project metric?
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29.
A stakeholder is any person or organization who:
Is affected by the project and its outcome.
Is very supportive of the project.
Wishes the project would just go away.
Has no position relative to the project.
30.
Which of these is
NOT
a deliverable of SIPOC?
Identifying the main steps of the in-scope workflow.
Identifying the outputs and customers of the in-scope workflow.
Identifying the inputs and suppliers of the in-scope workflow.
Identifying the goals of the project with respect to the in-scope workflow.
31.
Which of these is
NOT
a purpose of observing the current state?
Identifying the location and types of waste.
Catching people making mistakes.
Identifying possible causes of problems.
Identifying opportunities for improvement.
32.
Basic process mapping (flowcharting) is
MOST
useful for:
Showing the sequence of activities and decision points in the in-scope workflow.
Showing WIP and cycle times for the main steps in the in-scope workflow.
Showing touch times for the main steps in the in-scope workflow.
Identifying responsibility for each step in the in-scope workflow.
33.
Cross-functional (“swimlane”) process mapping is
LEAST
useful for:
Showing hand-offs in the in-scope workflow.
Showing do-overs in the in-scope workflow.
Identifying responsibility for each step in the in-scope workflow.
Showing WIP and cycle times for the main steps in the in-scope workflow.
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34.
Which of these cycle times represents the fastest rate of production?
1 minute.
2 minutes.
3 minutes.
4 minutes.
35.
Suppose a manufacturing process has a cycle time of 1.5 minutes. How many parts are produced each hour?
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36.
The purpose of value stream and process mapping is to:
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37.
Value stream mapping is
MOST
useful for:
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38.
The average WIP in a workflow is 50 items. 5 items are completed each day. What is the average lead time?
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39.
We want to do an analysis to determine whether getting a customer order from a quote is more likely or less likely depending on which account manager submitted the request for quote to the customer, which business unit created the quote, and the turnaround time. What is the Y variable for this analysis?
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40.
We want to do another analysis using all four variables listed below. Which of these choices, (a, b, c or d) would be the Y variable, i.e., the one that could be dependent on the other three?
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41.
Suppose that a population of interest can be divided into several homogeneous sub-populations of equal size. Which sample will be most representative of the population?
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42.
Which of these statements about random sampling is always true?
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43.
We want to collect data to estimate a population mean. We think the sample standard deviation will be about 20, and we want a margin of error equal to 5. Like almost everyone else who does this sort of thing, we will use the 95% confidence level. What is the required sample size?
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44.
We want to collect data to estimate a population percent defective. Our guess for the percent defective is 20. We want an upper margin of error equal to 5 percentage points, equivalent to an upper bound of 25 on the population percent defective. We will use the 95% confidence level. What is the required sample size?
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45.
Which of these is
NOT
a description of the standard data matrix format?
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46.
Which of these variables is a quantitative measurement?
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47.
Which of these variables is a categorical classification?
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48.
We have a quantitative variable that follows a Normal distribution with mean 50 and standard deviation 5. What percentage of future observations will exceed 60?
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49.
Which of the following statistics is a measure of process variation?
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50.
Suppose we have a quantitative measurement system for which standards are
NOT
available. What is the primary objective of measurement system analysis in this case?
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51.
Suppose we have a quantitative MSA involving 5 items, 9 appraisers, and 2 sessions. What is the number of degrees for freedom for repeatability?
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52.
For the MSA in the previous question, what is the number of degrees for freedom for reproducibility?
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53.
Which of these is
NOT
a result of measurement system variation?
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54.
Which Excel tool is needed for a quantitative measurement system analysis involving multiple parts and multiple appraisers?
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55.
We have a quantitative measurement system for which there are 10 appraisers. Which is the better design for a measurement system analysis?
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56.
Suppose we have a categorical measurement system for which standards
ARE
available. What is the primary objective of measurement system analysis in this case?
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57.
Suppose we have a categorical measurement system for which standards are available. Which quantity will you
NOT
be able to determine in a measurement system analysis?
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58.
Based on the file
proto builds
in the
LSSV1 data sets
folder, find the overall percent failing in the data and the upper 95% confidence bound on the population percent failing. Which of the following pairs (formatted as ‘overall % failing’ and ‘upper 95% confidence bound’) gives the correct numbers?
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59.
A Pareto chart is used to:
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60.
If we have failure reasons in a column in Excel, what is the recommended way to determine the number of occurrences for each failure reason?
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61.
In a binding operation, the average numbers of defects per book are given (by category) as follows: 7 (Emulsion), 65.4 (Folds), 43.6 (Grease), 54.5 (Sewing). In what order, from left to right, would the categories be listed on a Pareto chart?
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62.
The standard elements of a basic statistical summary for quantitative data are:
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63.
What is the recommended way (in Excel) to produce a basic statistical summary for quantitative data?
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64.
What is the traditional graphic for displaying variation in quantitative data without plotting it over time?
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65.
We have data on a quantitative Y variable in column A. We want column B to say “Pass” if Y is less than or equal to 50, and “Fail” if Y is greater than 50. Which is the correct Excel formula for defining column B, starting with data in row 2 of the Excel worksheet?
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66.
Which of the following is
NOT
true about the process capability indices C
_{p}
and C
_{pk}
?
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67.
Which of the following is
NOT
true about C
_{p}
?
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68.
For a process with C
_{p}
= 1.33 and C
_{pk}
= 0.9, which of the following is
NOT
true?
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69.
Which question involves a comparison of populations?
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70.
Which question involves correlating variables?
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71.
Which chart type is recommended for showing the correlation between two quantitative variables?
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72.
For a quantitative Y variable, what is the correct Excel tool for comparing populations?
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73.
Based on the file
proto builds
in the
LSSV1 data sets
folder, test for a difference in percent failing between lots 1 and 2. What is the P value?
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74.
What is the correct conclusion from the analysis in the previous question?
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75.
Which is the correct Excel tool for correlating variables?
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76.
The P value from a before-after comparison is 0.0375. What is the correct conclusion?
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77.
The P value from a correlation analysis is 0.7350. What is the correct conclusion?
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78.
What is the appropriate follow-up if a stratification analysis results in a P value of 0.7350?
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79.
What is the appropriate follow-up if a correlation analysis of X and Y variables results in a P value of 0.0375?
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80.
Which of these tools or techniques is
NOT
used in validating root causes or critical x’s?
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81.
Which chart type is most often associated with root cause analysis?
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82.
At the end of the Analyze Phase, to determine which root causes or critical x’s to address in the Improve Phase, the team must __________.
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83.
Brainstorming is a team process used to:
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84.
Which of these is
NOT
a source of improvement ideas?
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85.
What is the recommended team process for prioritizing improvement ideas?
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86.
Which benefit is associated with larger batch sizes?
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87.
Which statement correctly captures the meaning of
pull system?
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88.
A workflow consists of three consecutive operations A, B, and C, one operator per operation. The touch time for Operation A is 10 minutes. The touch time for Operation B is 15 minutes. The touch time for Operation C is 5 minutes. What is the capacity cycle time of the workflow?
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89.
In the previous question, which is the better way to reduce the capacity cycle time?
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90.
Which of these is
NOT
a purpose of FMEA in a LSS project?
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91.
The term
severity
in FMEA refers to the:
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92.
The term
occurrence
in FMEA refers to the:
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93.
The term
detection
in FMEA refers to the:
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94.
Which of these is
NOT
good practice for piloting the future state?
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95.
Which of these is
NOT
true of the data collected while piloting the future state?
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96.
Which of these is
NOT
a characteristic of assignable-cause variation?
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97.
Which of these is
NOT
a characteristic of statistical control limits?
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98.
What is a response plan?
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99.
Every four hours, a sample of 50 customer invoices are to be evaluated for accuracy. The percent with errors will be plotted on a control chart. What is the appropriate control chart to use in this case?
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100.
The critical dimension of the process to be monitored is weight. Every part is automatically measured and each measurement is to be plotted on a control chart. What is the appropriate control chart in this case?
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