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Six Sigma ICBB Exam Practice Questions (P. 2)

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Question #11
The Control Limits width varies if the sample size varies for which type of chart?
  1. A
    P Charts
  2. B
    NP Charts
  3. C
    Xbar-R Charts
  4. D
    Time Series Charts

Correct Answer:
A

Question #12
Which of these elements are not included in Implementation plans?
  1. A
    Work breakdown structure
  2. B
    Risk management plans
  3. C
    Cost/Benefit ratios
  4. D
    Planned audits of work completion

Correct Answer:
C

Question #13
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?
  1. A
    Standard operating work description of the process change
  2. B
    Description of the monitoring system in place to assure continued compliance
  3. C
    Summary of the targeted critical metrics for process performance measurement
  4. D
    All of the above

Correct Answer:
D

Question #14
What conclusion is most correct about the Experimental Design shown here with the response in the far right column?

  1. A
    No factor has enough statistical confidence greater than 95% to have an impact on the response rate
  2. B
    Constant, Adv and Bev are the only factors statistically affecting the response rate with 95% confidence or more
  3. C
    If the Adv is increased from the low level to the high level, the response rate increases
  4. 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
  5. E
    This design does not have enough experimental runs to conclude anything as evidenced by the lack of P-values in the MINITABTM output

Correct Answer:
D

Question #15
Which statement(s) are correct about the Factorial Plot shown here? (Note: There are 3 correct answers).

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

Correct Answer:
ABC

Question #16
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.
  1. A
    10
  2. B
    32
  3. C
    256
  4. D
    64

Correct Answer:
B

Question #17
If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement is incorrect?
  1. A
    The Experimental Design is half-fractional
  2. B
    The Main Effects are confounded with only 4-way interactions
  3. 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
  4. D
    The experiment has 8 experimental runs with the first factor at the high level

Correct Answer:
C

Question #18
Which statement(s) are correct about the Pareto Chart shown here for the DOE analysis? (Note: There are 2 correct answers).

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

Correct Answer:
AC

Question #19
Fractional Factorial, ____________and Response Surface Method are types of planned experiments.
  1. A
    Multi-Vari Analysis
  2. B
    Baldridge Channels
  3. C
    One Factor at a Time or OFAT
  4. D
    Factorial Design

Correct Answer:
D

Question #20
Relative to a Design of Experiments the term ________________ refers to variables being a linear combination of each other.
  1. A
    Mirror Image
  2. B
    Directly Parallel
  3. C
    Collinear
  4. D
    None of the above

Correct Answer:
C

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