gaqm clssbb practice test

Exam Title: Certified Lean Six Sigma Black Belt

Last update: Nov 27 ,2025
Question 1

The Control Limits width varies if the sample size varies for which type of chart?

  • A. P Charts
  • B. NP Charts
  • C. Xbar-R Charts
  • D. Time Series Charts
Answer:

A

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Question 2

Which of these elements are not included in Implementation plans?

  • A. Work breakdown structure
  • B. Risk management plans
  • C. Cost/Benefit ratios
  • D. Planned audits of work completion
Answer:

C

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Question 3

Upon completion and validation of an improvement to a process a Belt and the Project Team create a
Control Plan that contains which of these?

  • A. Standard operating work description of the process change
  • B. Description of the monitoring system in place to assure continued compliance
  • C. Summary of the targeted critical metrics for process performance measurement
  • D. All of the above
Answer:

D

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Question 4

What conclusion is most correct about the Experimental Design shown here with the response in the
far right column?

  • A. No factor has enough statistical confidence greater than 95% to have an impact on the response rate
  • B. Constant, Adv and Bev are the only factors statistically affecting the response rate with 95% confidence or more
  • C. If the Adv is increased from the low level to the high level, the response rate increases
  • D. The response level is statistically concluded to only need the Adv and Bev factors set at the low level to get the largest response rate
  • E. This design does not have enough experimental runs to conclude anything as evidenced by the lack of P-values in the MINITABTM output
Answer:

D

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Question 5

Which statement(s) are correct about the Factorial Plot shown here? (Note: There are 3 correct
answers).

  • A. When the cutting speed increased from low to high level, the tool age increases
  • B. The coefficient of the metal hardness is positively related to the output of tool age
  • C. The coded coefficient is lower for cutting speed than the cutting angle related to the output of tool age
  • D. These plots prove a statistically significance factor with 95% confidence
  • E. These plots are an example of interaction plots
Answer:

A,B,C

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Question 6

How many experimental runs exist in a Full Factorial and fully randomized design for 4 factors with 2
replicates for the Corner Points and no Center Points? The factors in the experiment are only at 2-
levels.

  • A. 10
  • B. 32
  • C. 256
  • D. 64
Answer:

B

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Question 7

If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16
experimental runs which statement is incorrect?

  • A. The Experimental Design is half-fractional
  • B. The Main Effects are confounded with only 4-way interactions
  • C. The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions
  • D. The experiment has 8 experimental runs with the first factor at the high level
Answer:

C

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Question 8

Which statement(s) are correct about the Pareto Chart shown here for the DOE analysis? (Note:
There are 2 correct answers).

  • A. It is unknown from this graph how many factors were in the Experimental Design
  • B. The factors to keep in the mathematical model are E, D, DE, BD and B with an alpha risk equal to 2.06
  • C. The effects to keep in the mathematical model are E, D, DE, BD and B with an alpha risk equal to 0.05
  • D. The factors to keep in the mathematical model with a 5% alpha risk are BE, AB, A and AD
Answer:

A,C

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Question 9

Fractional Factorial, ____________and Response Surface Method are types of planned experiments.

  • A. Multi-Vari Analysis
  • B. Baldridge Channels
  • C. One Factor at a Time or OFAT
  • D. Factorial Design
Answer:

D

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Question 10

Relative to a Design of Experiments the term ________________ refers to variables being a linear
combination of each other.

  • A. Mirror Image
  • B. Directly Parallel
  • C. Collinear
  • D. None of the above
Answer:

C

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