Six Sigma Study Guide Exam with
Questions and Correct Answers 2025
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 - CORRECT ANSWERS B. Visual Factory
A Lean Principle that addresses efficiency by the process worker is called ______?
A. Visual Factory
B. Supervising
C. Training
D. Standardizing - CORRECT ANSWERS D. Standardizing
While management of a company must set the stage for all improvement efforts, which
of these 5S's is primarily driven by management?
A. Straighten
B. Sort
C. Shine
D. Sustain - CORRECT ANSWERS D. Sustain
As part of a Visual Factory plan cards are created and utilized to identify areas in need
of cleaning and organization.
A. Kanban
B. Kaizen
C. Poke-Yoke
D. WhoSai - CORRECT ANSWERS A. Kanban
The use of Kanbans works best with pull systems for determining the timing of which
products or services are produced.
A. True
B. False - CORRECT ANSWERS A. True
When a Belt applies the practices of Poka-Yoke to project challenges, she is attempting
to make certain the activity is...
A. Well documented
B. Removed from the line
C. Mistake proofed
D. Highly visible - CORRECT ANSWERS C. Mistake Proofed
,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 - CORRECT ANSWERS D. Sorting
SPC on the outputs is more preferred than SPC on the inputs when implementing SPC
for your process.
A. True
B. False - CORRECT ANSWERS B. False
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 - CORRECT ANSWERS A. Common
D. Special
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. - CORRECT ANSWERS C.
Design defect prevention into the product.
A periodic time frame can be used to arrange for Control Limit and Center Line 4
calculations with good SPC implementation in a process.
A. True
B. False - CORRECT ANSWERS A. True
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 - CORRECT ANSWERS A. True
Which statement(s) describe an undesirable situation when implementing SPC?
A. The Lower Control Limit for the R chart is equal to zero.
B. Attempt to use SPC for tracking transaction times at a warehouse.
C. A process is in Statistical Control before implementation of SPC.
, D. The Control Limits are wider than the customer specification limits. - CORRECT
ANSWERS D. The Control Limits are wider than the customer specification limits.
If a process has Outliers, which pair of charts is most preferable if subgroups will exist
for the Continuous Data?
A. Individual - Moving Range
B. Xbar- R Charts
C. Xbar - S Charts
D. nP and P Charts - CORRECT ANSWERS B. Xbar-R Charts
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 - CORRECT ANSWERS A. Moving Average Chart
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. - CORRECT
ANSWERS A. Never, a Control Plan is a living document.
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 that the two metrics are _______
correlated.
A. Positively
B. Not
C. Negatively
D. None - CORRECT ANSWERS C. Negatively
Multiple Linear Regressions (MLR) is best used when which of those are applicable?
(Note: There are 3 correct answers).
A. Non-linear relationships between the inputs X's and output Y.
B. Uncertainty in the slope of the linear relationship between an X and a Y.
C. Relationships between Y (output) and more than one X (Input).
D. Preventing the use of a Designed Experiment if unnecessary.
E. We assume that the X;s are independent of eachother. - CORRECT ANSWERS C.
D. and E.
Fractional Factorial designs for an experimental approach are used when _____ about
the multiple metric interaction in a process.
A. Much is known
B. Little is known
Questions and Correct Answers 2025
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 - CORRECT ANSWERS B. Visual Factory
A Lean Principle that addresses efficiency by the process worker is called ______?
A. Visual Factory
B. Supervising
C. Training
D. Standardizing - CORRECT ANSWERS D. Standardizing
While management of a company must set the stage for all improvement efforts, which
of these 5S's is primarily driven by management?
A. Straighten
B. Sort
C. Shine
D. Sustain - CORRECT ANSWERS D. Sustain
As part of a Visual Factory plan cards are created and utilized to identify areas in need
of cleaning and organization.
A. Kanban
B. Kaizen
C. Poke-Yoke
D. WhoSai - CORRECT ANSWERS A. Kanban
The use of Kanbans works best with pull systems for determining the timing of which
products or services are produced.
A. True
B. False - CORRECT ANSWERS A. True
When a Belt applies the practices of Poka-Yoke to project challenges, she is attempting
to make certain the activity is...
A. Well documented
B. Removed from the line
C. Mistake proofed
D. Highly visible - CORRECT ANSWERS C. Mistake Proofed
,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 - CORRECT ANSWERS D. Sorting
SPC on the outputs is more preferred than SPC on the inputs when implementing SPC
for your process.
A. True
B. False - CORRECT ANSWERS B. False
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 - CORRECT ANSWERS A. Common
D. Special
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. - CORRECT ANSWERS C.
Design defect prevention into the product.
A periodic time frame can be used to arrange for Control Limit and Center Line 4
calculations with good SPC implementation in a process.
A. True
B. False - CORRECT ANSWERS A. True
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 - CORRECT ANSWERS A. True
Which statement(s) describe an undesirable situation when implementing SPC?
A. The Lower Control Limit for the R chart is equal to zero.
B. Attempt to use SPC for tracking transaction times at a warehouse.
C. A process is in Statistical Control before implementation of SPC.
, D. The Control Limits are wider than the customer specification limits. - CORRECT
ANSWERS D. The Control Limits are wider than the customer specification limits.
If a process has Outliers, which pair of charts is most preferable if subgroups will exist
for the Continuous Data?
A. Individual - Moving Range
B. Xbar- R Charts
C. Xbar - S Charts
D. nP and P Charts - CORRECT ANSWERS B. Xbar-R Charts
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 - CORRECT ANSWERS A. Moving Average Chart
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. - CORRECT
ANSWERS A. Never, a Control Plan is a living document.
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 that the two metrics are _______
correlated.
A. Positively
B. Not
C. Negatively
D. None - CORRECT ANSWERS C. Negatively
Multiple Linear Regressions (MLR) is best used when which of those are applicable?
(Note: There are 3 correct answers).
A. Non-linear relationships between the inputs X's and output Y.
B. Uncertainty in the slope of the linear relationship between an X and a Y.
C. Relationships between Y (output) and more than one X (Input).
D. Preventing the use of a Designed Experiment if unnecessary.
E. We assume that the X;s are independent of eachother. - CORRECT ANSWERS C.
D. and E.
Fractional Factorial designs for an experimental approach are used when _____ about
the multiple metric interaction in a process.
A. Much is known
B. Little is known
