Six Sigma Six Sigma Certifications LSSMBB Questions & Answers

• Question 121:

  When a Belt properly analyzes the results of an experiment he must examine the Residuals in expectation of finding all of the following except _________.

  A. Some Residuals higher than others

  B. Some Residuals lower than others

  C. All Residuals within 2 Standard Deviations of the Mean

  D. Residuals will represent a Linear Regression

  Correct Answer: D

• Question 122:

  Which statement(s) are incorrect for the Regression Analysis shown here? (Note: There are 2 correct answers).

  

  A. The air-fuel ratio explains most of the TurbineOutput variation

  B. The Regression explains over 98% of the process variation

  C. This Multiple Linear Regression has three statistically significant independent variables

  D. If the air-fuel ratio increases by 1, the TurbineOutput more than triples

  E. The SteamExitTemp explains the most variation of the TurbineOutput

  Correct Answer: DE

• Question 123:

  Which statement(s) are correct about the DOE Factorial plot output here? (Note: There are 3 correct answers).

  

  A. Two factors were operated at 3 levels each

  B. The highest tool age was achieved with metal hardness at high level while keeping the cutting speed at the low level

  C. The design indicated above is a 32 factorial design

  D. The cutting speed and cutting angle are at the low level for the least tool age achieved

  E. All factors had 2 levels in the experiment

  Correct Answer: BCE

• Question 124:

  A Full Factorial experiment using a 3 level 3 factor approach has been proposed to test the viability of an extrusion machine experiment. How many treatment combinations will this approach involve?

  A. 6

  B. 9

  C. 27

  D. 54

  Correct Answer: C

• Question 125:

  Screening experiments are the proper choice when a Belt is faced with the situation of highly Fractional Factorial Designs.

  A. True

  B. False

  Correct Answer: A

• Question 126:

  A Factorial Experiment based on a Level 2 Design with 6 factors would require 16 runs to fully assess the interactions.

  A. True

  B. False

  Correct Answer: B

• Question 127:

  Fractional Factorial designs are used to reduce the ____________ because the number of runs has been lowered.

  A. Time and cost of experiments

  B. Number of people involved

  C. Number of data measurement points

  D. Output summary

  Correct Answer: A

• Question 128:

  Fractional Factorial Designs are used to analyze factors to model the output as a function of inputs if Hypothesis Testing in the Analyze Phase was inadequate to sufficiently narrow the factors that significantly impact the output(s).

  A. True

  B. False

  Correct Answer: A

• Question 129:

  SPC Charts are used extensively in different business and decision-making environments. In this example a vendor is being selected based on speed of delivery. Which of the conclusions would help you pick a vendor for your needs regarding lead-time of delivery from your vendors? (Note: There are 4 correct answers).

  

  A. Vendor A with a much shorter lead time in delivery

  B. Vendor B as it has a better consistency (lower variance) on lead time

  C. Vendor B as Vendor A shows a situation out of control as shown in red

  D. Vendor B as the Control Limits are much narrower than Vendor A

  E. Vendor B with higher lead time, but a process with much narrower Control Limits

  Correct Answer: BCDE

• Question 130:

  When a Belt decides to use written procedures and visual controls to improve the consistency of the tasks that must occur in the process he is improving he has utilized the _________________ activity of 5S.

  A. Sustaining

  B. Sorting

  C. Standardizing

  D. Straightening

  Correct Answer: C