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Free IASSC ICGB Practice Questions & Answers 2026 Part5 | Certified Lean Six Sigma Green Belt

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Question #1
A Belt concludes a Lean Six Sigma project with the creation of a Control Plan. At what point can the Control Plan be closed?
A. Never, a Control Plan is a living document
B. As soon as the Champion signs off
C. Within 30 days of the LSS project review team meeting
D. After the project has been presented at the recognition event
View answer
Correct Answer: A
Question #2
Bias in Sampling is an error due to lack of independence among random samples or due to systematic sampling procedures.
A. True
B. False
View answer
Correct Answer: A
Question #3
A Six Sigma tool that helps to screen factors by using graphical techniques to logically subgroup multiple discrete X's plotted against a continuous Y is known as a _____________Chart.
A. SIPOC
B. Multi-Vari
C. Box Plot
D. Whisker
View answer
Correct Answer: B
Question #4
__________ Distributions occur when data comes from several sources that are supposed to be the same yet are not.
A. Skewed
B. Bimodal
C. Gaussian
D. Tri-peaked
View answer
Correct Answer: A
Question #5
Which statement(s) are correct for the Regression Analysis shown here? (Note: There are 2 correct answers).
A. This Regression is an example of a Multiple Linear Regression
B. This Regression is an example of Cubic Regression
C. %Cu explains the majority of the process variance in heat flux
D. Thickness explains over 80% of the process variance in heat flux
E. The number of Residuals in this Regression Analysis is 26
View answer
Correct Answer: AD
Question #6
A Six Sigma tool that helps to screen factors by using graphical techniques to logically subgroup multiple discrete X's plotted against a continuous Y is known as a _____________Chart.
A. SIPOC
B. Multi-Vari
C. Box Plot
D. Whisker
View answer
Correct Answer: B
Question #7
A primary benefit of using a Multi-Vari Chart is it provides a visual presentation of two-way interactions.
A. True
B. False
View answer
Correct Answer: A
Question #8
A Belt concludes a Lean Six Sigma project with the creation of a Control Plan. At what point can theControl Plan be closed?
A. ever, a Control Plan is a living document
B. s soon as the Champion signs off
C. ithin 30 days of the LSS project review team meeting
D. fter the project has been presented at the recognition event
View answer
Correct Answer: A
Question #9
A Lean Principle that addresses efficiency by the process worker is called ____________________?
A. Visual Factory
B. Supervising
C. Training
D. Standardizing
View answer
Correct Answer: D
Question #10
Select all the statements that are true after reviewing the Capability Analysis shown here. (Note:There are 4 correct answers).
A. The process is out of Control
B. The process is properly assumed to be a Normal process
C. The Mean of the process moving range is 1
D. This Capability Analysis used subgroups
E. Majority of the dimensional values are outside of the tolerance than within
View answer
Correct Answer: BCDE
Question #11
Which statement(s) are true about the Fitted Line Plot shown here? (Note: There are 2 correct answers).
A. When Reactant increases, the Energy Consumed increases
B. The slope of the equation is a positive 130
C. The predicted output Y is close to -18 when the Reactant level is set to 6
D. Over 85 % of the variation of the Energy Consumed is explained by the Reactant via this Linear Regression
View answer
Correct Answer: CD
Question #12
Select all the statements that are true after reviewing the Capability Analysis shown here. (Note:There are 4 correct answers).
A. The process is out of Control
B. The process is properly assumed to be a Normal process
C. The Mean of the process moving range is 1
D. This Capability Analysis used subgroups
E. Majority of the dimensional values are outside of the tolerance than within
View answer
Correct Answer: BCDE
Question #13
The use of station warning lights, tool boards and jidohka devices in the application of Lean accomplish which of these principles?
A. Pilferage Minimization
B. Visual Factory
C. Management Awareness
D. Operator Attentiveness
View answer
Correct Answer: B
Question #14
When analyzing a data set we frequently graph one metric as a function of another. If the slope ofthe Correlation line is -2.5 we would say the two metrics are ___________ correlated?
A. ositively
B. ot
C. egatively
D. one
View answer
Correct Answer: C
Question #15
When it comes to Control one of the most effective means of eliminating defects is to _________________ .
A. Train personnel often and thoroughly
B. Keep a Six Sigma project going on the process at all times
C. Design defect prevention into the product
D. Have each process consist of no more than five steps
View answer
Correct Answer: C
Question #16
A primary benefit of using a Multi-Vari Chart is it provides a visual presentation of two-way interactions.
A. True
B. False
View answer
Correct Answer: A
Question #17
__________ Distributions occur when data comes from several sources that are supposed to be the same yet are not.
A. Skewed
B. Bimodal
C. Gaussian
D. Tri-peaked
View answer
Correct Answer: A
Question #18
Significant variation in process performance is a consequence of several causes that can be classified using which of the terminologies shown. (Note: There are 2 correct answers).
A. Common
B. Random
C. Uneducated
D. Special
E. Vital
View answer
Correct Answer: AD
Question #19
The Lean Principle action in the 5S approach that deals with having those items needed regularly at hand and those items need less regularly stored out of the way is known as ___________.
A. Shining
B. Standardizing
C. Sustaining
D. Sorting
View answer
Correct Answer: D
Question #20
Bias in Sampling is an error due to lack of independence among random samples or due to systematic sampling procedures.
A. True
B. False
View answer
Correct Answer: A
Question #21
A primary benefit of using a Multi-Vari Chart is it provides a visual presentation of two-way interactions.
A. True
B. False
View answer
Correct Answer: A
Question #22
Kanbans work best with pull systems for determining the timing of which products or services are produced.
A. True
B. False
View answer
Correct Answer: A
Question #23
A Lean Principle that addresses efficiency by the process worker is called ____________________?
A. isual Factory
B. upervising
C. raining
D. tandardizing
View answer
Correct Answer: D
Question #24
Bias in Sampling is an error due to lack of independence among random samples or due to systematic sampling procedures.
A. True
B. False
View answer
Correct Answer: A
Question #25
In the late 1980's William Smith coined the name Six Sigma for a methodology that had its origins at __________________ for quality related work being done there.
A. Honeywell
B. Allied Signal
C. General Electric
D. Motorola
View answer
Correct Answer: D
Question #26
Select all the statements that are true after reviewing the Capability Analysis shown here. (Note:There are 4 correct answers).
A. The process is out of Control
B. The process is properly assumed to be a Normal process
C. The Mean of the process moving range is 1
D. This Capability Analysis used subgroups
E. Majority of the dimensional values are outside of the tolerance than within
View answer
Correct Answer: BCDE
Question #27
The data on SPC charts are typically constructed such that they have the most recent data point on the right hand side.
A. True
B. False
View answer
Correct Answer: A
Question #28
When it comes to Control one of the most effective means of eliminating defects is to _________________ .
A. Train personnel often and thoroughly
B. Keep a Six Sigma project going on the process at all times
C. Design defect prevention into the product
D. Have each process consist of no more than five steps
View answer
Correct Answer: C
Question #29
A Six Sigma tool that helps to screen factors by using graphical techniques to logically subgroup multiple discrete X's plotted against a continuous Y is known as a _____________Chart.
A. SIPOC
B. Multi-Vari
C. Box Plot
D. Whisker
View answer
Correct Answer: B
Question #30
A Six Sigma tool that helps to screen factors by using graphical techniques to logically subgroup multiple discrete X's plotted against a continuous Y is known as a _____________Chart.
A. SIPOC
B. Multi-Vari
C. Box Plot
D. Whisker
View answer
Correct Answer: B
Question #31
Which statement(s) are correct for the Regression Analysis shown here? (Note: There are 2 correct answers).
A. This Regression is an example of a Multiple Linear Regression
B. This Regression is an example of Cubic Regression
C. %Cu explains the majority of the process variance in heat flux
D. Thickness explains over 80% of the process variance in heat flux
E. The number of Residuals in this Regression Analysis is 26
View answer
Correct Answer: AD
Question #32
As a standard for a process to be at the 6 Sigma quality level, it must have?
A. Cp & Cpk > 1
B. Cp & Cpk >2
C. Cp >1
D. Cp >2
View answer
Correct Answer: B
Question #33
While management of a company must set the stage for all improvement efforts, which of these 5S’s is primarily driven by management?
A. traighten
B. ort
C. hine
D. ustain
View answer
Correct Answer: D
Question #34
__________ Distributions occur when data comes from several sources that are supposed to be the same yet are not.
A. Skewed
B. Bimodal
C. Gaussian
D. Tri-peaked
View answer
Correct Answer: A
Question #35
__________ Distributions occur when data comes from several sources that are supposed to be the same yet are not.
A. Skewed
B. Bimodal
C. Gaussian
D. Tri-peaked
View answer
Correct Answer: A
Question #36
Which of these is Discrete data?
A. f the 42 people on the bus, 12 went into the station
B. t took 3 hours and 32 minutes to complete the marathon
C. rain arrived at 4:17 pm
D. ace car consumed 23 gallons of fuel
View answer
Correct Answer: A
Question #37
The actual experimental response data varied somewhat from what a Belt had predicted them to be. This is the result of which of these?
A. Inefficiency of estimates
B. Residuals
C. Confounded data
D. Gap Analysis
View answer
Correct Answer: B
Question #38
SPC on the outputs is more preferred than SPC on the inputs when implementing SPC for your process.
A. True
B. False
View answer
Correct Answer: B
Question #39
According to a manager it takes an average weekday commute of 39 minutes with a Standard Deviation of 7 minutes for the employees to get to work while they use their personal vehicles for their office commute while the management set a policy of not more than 40 minutes for their daily one-way commute. A survey conducted one day on 70 employees showed an average of 34 minutes commuting time using the metro public transportation system with a Standard Deviation of 21 minutes. If the Standard Deviation is uncontrollable then the other option to increase the probability of coming in on time via personal vehicles to work could be ____________?
A. Increase the average time of commute
B. Maintain the average time of commute and change route to work
C. Reduce average commute time to work by departing earlier
D. Change policy at work and request for flexible times based on location
View answer
Correct Answer: C
Question #40
The Accuracy of a Measurement System addresses _________________.
A. tability & Sensitivity
B. tability, Bias & Linearity
C. recision & Sensitivity
D. epeatability & Reproducibility
View answer
Correct Answer: B
Question #41
The use of Kanbans work best with pull systems for determining the timing of which products or services are produced.
A. True
B. False
View answer
Correct Answer: A
Question #42
Bias in Sampling is an error due to lack of independence among random samples or due to systematic sampling procedures.
A. True
B. False
View answer
Correct Answer: A
Question #43
A Six Sigma tool that helps to screen factors by using graphical techniques to logically subgroup multiple discrete X's plotted against a continuous Y is known as a _____________Chart.
A. SIPOC
B. Multi-Vari
C. Box Plot
D. Whisker
View answer
Correct Answer: B
Question #44
After a Belt has put data through the smoothing process which chart would be used to look for trends in the data?
A. Moving Average Chart
B. Multi-Vari Chart
C. X bar Chart
D. Pareto Chart
View answer
Correct Answer: A
Question #45
When analyzing a data set we frequently graph one metric as a function of another. If the slope of the Correlation line is -2.5 we would say the two metrics are ___________ correlated?
A. Positively
B. Not
C. Negatively
D. None
View answer
Correct Answer: C
Question #46
A primary benefit of using a Multi-Vari Chart is it provides a visual presentation of two-way interactions.
A. True
B. False
View answer
Correct Answer: A
Question #47
The following Business Case is constructed properly. ''In business unit A there are too many flashlight returns and flashlight sales have decreased by 25 percent.''
A. ATrue
B. BFalse
View answer
Correct Answer: B

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