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Free IASSC ICYB Practice Questions & Answers 2026 Part1 | Certified Lean Six Sigma Yellow Belt

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Question #1
As a Belt created a Process Map he realized there were multiple departments involved in this processso he added a feature to the map called ______________.
A. assing Lanes
B. wim Lanes
C. epartment Dividers
D. esponsibility Paths
View answer
Correct Answer: B
Question #2
A ______________ is a graphical presentation of sample data that shows the number of times that a data point is a specific number.
A. Fishbone Diagram
B. Histogram
C. Pie Chart
D. Box Plot
View answer
Correct Answer: B
Question #3
One of the primary benefits of your team working together to create an X-Y Diagram is that the data collected from this exercise is accurate and certain.
A. True
B. False
View answer
Correct Answer: B
Question #4
When a Belt wishes to clarify the activities of various departments in a Process Map she is creating she adds a feature to the map called ______________.
A. Department Dividers
B. Passing Lanes
C. Swim Lanes
D. Responsibility Paths
View answer
Correct Answer: C
Question #5
The purpose of a ___________ is to identify the complexity of the process and to assist in identifying critical steps in the process.
A. Pareto Chart
B. Process Map
C. Kanban
D. Kaizen event
View answer
Correct Answer: B
Question #6
Six Sigma refers to a process whose output has at least 95% of its data points within 6 StandardDeviations from the Mean.
A. True
B. False
View answer
Correct Answer: B
Question #7
As a Belt created a Process Map he realized there were multiple departments involved in this process so he added a feature to the map called ______________.
A. Passing Lanes
B. Swim Lanes
C. Department Dividers
D. Responsibility Paths
View answer
Correct Answer: B
Question #8
A Belt has determined that the loan application does not need to be reviewed by accounting therebyimproving the number of applications a loan processer can handle. According to Cost of Poor Quality(COPQ) definitions RTY improvement would be considered _______________.
A. ownsizing savings
B. ard savings
C. oft savings
D. edian savings
View answer
Correct Answer: B
Question #9
Upon completion of a project a Belt must complete the ____________________ then transfer responsibility for this to the Process Owner.
A. Final Process Map
B. Project Timesheet
C. Team Briefing Paper
D. Documentation Plan
View answer
Correct Answer: D
Question #10
The following Business Case is constructed properly. ''During most of 2008 Division 16 experienced a 4.2% product return rate versus a target of nearly no returns. This costs the company a whole bunch of money.
A. True
B. False
View answer
Correct Answer: B
Question #11
Voice of the Customer is a Lean Six Sigma technique to determine the ___________ attributes of a product or service.
A. Desirable
B. Beneficial
C. Critical-to-Quality
D. Preferred
View answer
Correct Answer: C
Question #12
With a Fishbone Diagram we use the legs to define each source of a potential defect and along the legs we enter each potential means by which a defect could be introduced into our process.
A. True
B. False
View answer
Correct Answer: A
Question #13
The purpose of a ___________ is to identify the complexity of the process and to assist in identifying critical steps in the process.
A. Pareto Chart
B. Process Map
C. Kanban
D. Kaizen event
View answer
Correct Answer: B
Question #14
With a Fishbone Diagram we use the legs to define each source of a potential defect and along the legs we enter each potential means by which a defect could be introduced into our process.
A. True
B. False
View answer
Correct Answer: A
Question #15
The Control Plan is the road map to sustaining the improvements made through the Lean Six Sigma project and should therefore involve keeping the ___________up to date as a means of supporting the Response Plan in case a defect is noticed.
A. X-Y Diagram
B. Shewhart Chart
C. FMEA
D. Customer Service Plan
View answer
Correct Answer: C
Question #16
When we create a Process Map we use a ____________ to show the direction of work flow.
A. Solid line arrow
B. Dashed line arrow
C. Series of dots
D. Double lines
View answer
Correct Answer: A
Question #17
The purpose of a ___________ is to identify the complexity of the process and to assist in identifying critical steps in the process.
A. Pareto Chart
B. Process Map
C. Kanban
D. Kaizen event
View answer
Correct Answer: B
Question #18
A 5 Why Analysis is used to help identify possible defect causes when which one of the below listed tools is created?
A. Fishbone Diagram
B. SIPOC
C. X-Y Matrix
D. Pareto Chart
View answer
Correct Answer: A
Question #19
When we create a Process Map we use a ____________ to show the direction of work flow.
A. Solid line arrow
B. Dashed line arrow
C. Series of dots
D. Double lines
View answer
Correct Answer: A
Question #20
A 5 Why Analysis is used to help identify possible defect causes when which one of the below listed tools is created?
A. Fishbone Diagram
B. SIPOC
C. X-Y Matrix
D. Pareto Chart
View answer
Correct Answer: A
Question #21
With a Fishbone Diagram we use the legs to define each source of a potential defect and along the legs we enter each potential means by which a defect could be introduced into our process.
A. True
B. False
View answer
Correct Answer: A
Question #22
The purpose of a ___________ is to identify the complexity of the process and to assist in identifying critical steps in the process.
A. Pareto Chart
B. Process Map
C. Kanban
D. Kaizen event
View answer
Correct Answer: B
Question #23
The length of wooden beams being sawed is measured by a line operator. Which is least likely to be influenced by the instrument?
A. Calibration of the instrument
B. Actual temperature of the liquid
C. Recording the measurement
D. Reading of the instrument
View answer
Correct Answer: C
Question #24
The purpose of ___________is to analyze data and present it in a way we can make informed decisions as to what is happening in our process.
A. Data Sampling
B. Basic Statistics
C. Calculating Standard Deviation
D. Measurement System Analysis
View answer
Correct Answer: B
Question #25
The purpose of a ___________ is to identify the complexity of the process and to assist in identifying critical steps in the process.
A. Pareto Chart
B. Process Map
C. Kanban
D. Kaizen event
View answer
Correct Answer: B
Question #26
When we create a Process Map we use a ____________ to show the direction of work flow.
A. Solid line arrow
B. Dashed line arrow
C. Series of dots
D. Double lines
View answer
Correct Answer: A
Question #27
Which of the following is a method of expressing the concept that the outputs of a process are afunction of all the inputs to the process?
A. = f(Xn)
B. TY > 90%
C. ield = Effort
D. low = Demand
View answer
Correct Answer: A
Question #28
As we begin to describe the things occurring with our process through a Process Map we begin to see some steps that are NVA which stands for ____________.
A. Non-value add
B. No violation allowed
C. Non-value actions
D. Next vehicle action
View answer
Correct Answer: A
Question #29
With a Fishbone Diagram we use the legs to define each source of a potential defect and along the legs we enter each potential means by which a defect could be introduced into our process.
A. True
B. False
View answer
Correct Answer: A
Question #30
One of the primary objectives of constructing an X-Y Diagram is to separate the vital few Y’s from the trivial many Y’s.
A. True
B. False
View answer
Correct Answer: B
Question #31
With a Fishbone Diagram we use the legs to define each source of a potential defect and along the legs we enter each potential means by which a defect could be introduced into our process.
A. True
B. False
View answer
Correct Answer: A
Question #32
In the expression Y = f(Xn) Y, the output, is the ___________ variable and Xn, the inputs, are the __________ variables.
A. Pareto Chart
B. Shewhart Analytical
C. Fishbone Diagram
D. None
View answer
Correct Answer: C
Question #33
A 5 Why Analysis is used to help identify possible defect causes when which one of the below listed tools is created?
A. Fishbone Diagram
B. SIPOC
C. X-Y Matrix
D. Pareto Chart
View answer
Correct Answer: A
Question #34
When a Belt wishes to clarify the activities of various departments in a Process Map she is creating she adds a feature to the map called ______________.
A. Department Dividers
B. Passing Lanes
C. Swim Lanes
D. Responsibility Paths
View answer
Correct Answer: C
Question #35
A 5 Why Analysis is used to help identify possible defect causes when which one of the below listed tools is created?
A. Fishbone Diagram
B. SIPOC
C. X-Y Matrix
D. Pareto Chart
View answer
Correct Answer: A
Question #36
To reduce the people or operator introduced defects into a process it is best if a Belt can design and implement a means of ______________ into the process.
A. Measurement automation
B. Operator alertness
C. Full Automation
D. Constant supervision
View answer
Correct Answer: C
Question #37
The purpose of a ___________ is to identify the complexity of the process and to assist in identifying critical steps in the process.
A. Pareto Chart
B. Process Map
C. Kanban
D. Kaizen event
View answer
Correct Answer: B
Question #38
When we create a Process Map we use a ____________ to show the direction of work flow.
A. Solid line arrow
B. Dashed line arrow
C. Series of dots
D. Double lines
View answer
Correct Answer: A
Question #39
The purpose of a ___________ is to identify the complexity of the process and to assist in identifying critical steps in the process.
A. Pareto Chart
B. Process Map
C. Kanban
D. Kaizen event
View answer
Correct Answer: B
Question #40
A 5 Why Analysis is used to help identify possible defect causes when which one of the below listed tools is created?
A. Fishbone Diagram
B. SIPOC
C. X-Y Matrix
D. Pareto Chart
View answer
Correct Answer: A

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