Practice Quiz

Six Sigma Black Belt Exam Prep - Question List

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6.

In an Interrelationship Digraph, a(n) _______ and ______ relationship between two variables is depicted visually.

  1. internal; external
  2. diversion; conversion
  3. cause; effect
  4. antecedent; precedent
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7. Project scope can be limited by the following factors EXCEPT:
  1. geography
  2. demographics
  3. organizational structures
  4. ten year financial projects
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8.

The Define phase is the first phase of Six Sigma’s DMAIC cycle. If this phase is not planned for and carried out thoroughly, a project may stall and not transition to other phases successfully. Which of the following project statements is well-defined?

  1. Encourage vendors to pay their invoices on time by threatening legal action
  2. Improve employee morale by increasing cooperation
  3. Reduce the reject rate of service B from 30% to 10% within 2 calendar years
  4. Launch a nationwide CEO recruitment campaign
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9. A Black Belt practitioner states in a project report that “we are 95% confident that the average age of consumers of Product A are between 34 and 38 years”. What does a confidence interval denote?
  1. they are 5% confident about the average age of the population
  2. they are 95% confident about the average age of the sample
  3. they are 5% confident about the average age of the sample
  4. they are 95% confident about the average age of the population
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10. According to the Central Limit Theorem, regardless of the population from which data is drawn, the sampling distribution of the mean when sufficiently large is:
  1. normally distributed
  2. abnormally distributed
  3. skewed towards the outliers
  4. skewed towards the standard deviation
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