Six Sigma CLSSBB Online Practice Questions and Exam Preparation

Six Sigma CLSSBB Online Questions & Answers

• Question 31:

  The median is a better choice than the mean for a measure of central tendency if the data:

  A. is bimodal
  B. often has outliers
  C. is normally distributed
  D. is exponentially distributed
  B. often has outliers

• Question 32:

  The following is a set of individual measurements: 3 5 4 5 6 3 4 3 2 4 5 6 5 7 6 4 5 5 8 7 6 6 7 7 4

  Find the control limits for the range chart.

  A. none and 4.2
  B. none and 5.1
  C. 0.2 and 1.5
  D. none of the above
  A. none and 4.2

• Question 33:

  (Refer to the previous problem) The variance of the five replications for each run is calculated. Most of these variances are approximately equal but two are significantly lower than the others. The experimenters would be especially interested in those two runs if they want to optimize:

  A. dissolution time
  B. interactions
  C. main effects
  D. robustness
  E. degrees of freedom
  D. robustness

• Question 34:

  The Central Limit Theorem states that the distribution of sample means approximates a normal distribution if:

  A. the population is normally distributed
  B. the sample is normally distributed
  C. the sample is randomly selected
  D. the sample size is sufficiently large
  E. the means are carefully calculated
  D. the sample size is sufficiently large

• Question 35:

  Calculate the estimated variance of the population from which the following values have been randomly selected: 2.8 2.7 2.6 2.9 2.8 2.8 2.8:

  A. .095
  B. .009
  C. .088
  D. .008
  A. .095

  ---

  Explanation/Reference:

  The variance formula will be used for calculating the estimated variance of the given data. The formula is: N = 7

  

  = 2.77

  

  (x

  )2

• Question 36:

  Kanban establishes a means of monitoring production, conveyance and delivery information such that efficient flow is established. The method used by Kanban is to require a _________ before anything moves.

  A. Sign-off
  B. Signal
  C. Bell to ring
  D. Work order
  B. Signal

• Question 37:

  One of the methods of testing a Measurement System is to have at least two people take multiple readings from the same instrument and of the same sample set to judge the Repeatability and Reproducibly. This approach is called a ______________ study.

  A. Correlation Analysis
  B. Gage R and R
  C. Bimodal
  D. Dual Attribute
  B. Gage R and R

• Question 38:

  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
  D. If the air-fuel ratio increases by 1, the TurbineOutput more than triples
  E. The SteamExitTemp explains the most variation of the TurbineOutput

• Question 39:

  Which of the following is the best technique for improving the precision of a designed experiment when the experimental material is NOT homogeneous?

  A. Blocking
  B. Confounding
  C. Randomization
  D. Fractionalizing
  A. Blocking

• Question 40:

  Special Cause Variation falls into which two categories?

  A. Natural and Unnatural
  B. Short Term and Long Term
  C. Assignable and Pattern D. Attribute and Discreet
  C. Assignable and Pattern D. Attribute and Discreet