Pages

Six Sigma Course Practice Test Q&As 16

Question: Which of the following statements regarding "Six Sigma" is TRUE?
  The term has two distinct meanings—one is statistical; the other is a comprehensive quality system.
  Six Sigma means that about 94 percent of a firm's output is free of defects.
  The Six Sigma program is for manufacturing firms, and is not applicable to services.
  The Six Sigma program was developed by Toyota in the 1970's.
  Six Sigma certification is granted by the International Standards Organization (ISO).

Show or Reveal the Answer

The term has two distinct meanings—one is statistical; the other is a comprehensive quality system.

Question: Which of the following statements about the DMAIC methodology is true?
  DMAIC addresses the improvement of an already established process.
  Team members gather baseline performance measurements during the Control phase.
  Teams tend to spend too much time in the Analyze phase and then rush through the Improve phase.
  Any one phase of DMAIC can be skipped in favor of spending more time in other, more relevant phases.

Show or Reveal the Answer

DMAIC addresses the improvement of an already established process.

Question: Which stage of the DMAIC process is most associated with solutions generation?
  Define
  Measure
  Analyze
  Improve
  Control

Show or Reveal the Answer

Improve

Question: A team has just completed one of the DMAIC steps. As part of the DMAIC methodology, they now have an understanding of the root causes of the problem(s). What phase of the DMAIC process are they completing?
  Define
  Measure
  Analyze
  Improve
  Control

Show or Reveal the Answer

Analyze

Question: In the DMAIC methodology, a data collection plan is created during which phase?
  Define
  Measure
  Analyze
  Improve
  Control

Show or Reveal the Answer

Measure

Question: In the DMAIC methodology, root causes are determined during which phase?
  Define
  Measure
  Analyze
  Improve
  Control

Show or Reveal the Answer

Analyze

Question: The risk priority number (RPN) is used ________.
  To determine whether a Six Sigma project is worthwhile
  To calculate safety for employees
  To rank the performance of project teams
  To calculate risk during FMEA

Show or Reveal the Answer

To calculate risk during FMEA

Question: Which of the following statements is true?
  An X-bar, R chart is the best choice to use when one does not have rational subgroups
  Specifications should be drawn on a control chart so that bad products can be detected
  Shifts, trends, and points out of control can be determined on the range portion of an X-bar, R control chart
  None of the above

Show or Reveal the Answer

None of the above

Question: Which of the following statements regarding Six Sigma team leadership is true?
  A Black Belt typically creates the project charter.
  A Green Belt is a full-time team lead.
  A Black Belt leads the team through the DMAIC methodology.
  A Green Belt leads at least four projects per year.

Show or Reveal the Answer

A Black Belt leads the team through the DMAIC methodology.

Question: What does a negative Cpk or Ppk indicate?
  Always is a math error
  The process standard deviation is negative
  The process average is out of specification
  The process mean is closer to the lower specification

Show or Reveal the Answer

The process average is out of specification

Question: Which of the following makes use of Six Sigma programs to improve quality and strategy execution?
  LG Electronics reengineers its value chain activities by creating cross-functional teams.
  La Tagliata Boutiques offers a different range of products at different outlets across London.
  Duke Energy replaces work depots by mobile repair vans reducing operational costs by 40 percent.
  Memphis & Company applies advanced statistical methods to identify and remove the causes of defects.
  Milwaukee Hospital relocates its pathological lab to reach out to consumers in suburbs.

Show or Reveal the Answer

Memphis & Company applies advanced statistical methods to identify and remove the causes of defects.

Six Sigma programs utilize advanced statistical methods to improve quality by reducing defects and variability in the performance of business processes. To address the suboptimal performance problems that can arise from this type of situation, a company can reengineer the work effort, pulling the pieces of an activity out of different departments and creating a single department or cross-functional work group to take charge of the whole process. The use of cross-functional teams has been popularized by the practice of business process re-engineering, which involves radically redesigning and streamlining the workflow. Duke Energy's move to replace work depots by mobile repair vans involves radically redesigning and streamlining how an activity is performed,and therefore, it pertains to business process reengineering.

Question: The primary goals of Six Sigma are to improve
  Effectiveness and efficiency
  Customer retention and employee retention
  Defect rate and profitability
  Knowledge transfer and cycle time
  Productivity and workmanship

Show or Reveal the Answer

Effectiveness and efficiency

Question: Well conceived, state-of-the-art information and operating systems
Well conceived, state of the art information and operating systems
  are essential because reengineering efforts, TQM, Six Sigma, and benchmarking programs can't be carried out effectively without them.
  not only enable better strategy execution but also strengthen organizational capabilities (perhaps enough to provide a competitive edge over rivals).
  make it simple and easy to spot cost overruns and inefficiencies.
  should aim at shortening a company's value chain, reducing the layers of management, empowering employees, and simplifying the task of reengineering business processes
  make it easier for top management to employ highly centralized decision-making and make good decisions quickly, without having to support a large, multi-layered management bureaucracy or run the risk of stupid decision-making by empowered employees.

Show or Reveal the Answer

not only enable better strategy execution but also strengthen organizational capabilities (perhaps enough to provide a competitive edge over rivals).

Question: Which of the following statements is NOT true?
  Multi-voting is a decision-making tool.
  A cause-effect diagram is a tool used in a brainstorming session.
  Xs are the process elements that explain Y
  A micro-problem statement is a granular statement of the problem defined in the charter.


Show or Reveal the Answer

Multi-voting is a decision-making tool.

Question: According to the lecture, which of the following tools can be described as the workhorse of DMAIC?
  Kano model
  CTQ tree
  House of quality
  Process map

Show or Reveal the Answer

Process map

Question: Customers feel: Six Sigma
  The process
  The average
  The variation
  All of the above

Show or Reveal the Answer

The variation

Question: Measurement accuracy is attained when...
  Different people get the same result when measuring the same item or characteristic.
  The measured value has little deviation from the actual value.
  The same person taking multiple measurements on the same item or characteristic gets the same results every time.
  When the resolution of the measurement instrument can give at least 5 distinct values in the range being measured.

Show or Reveal the Answer

The measured value has little deviation from the actual value.

Question: The objective of Design of Experiments (DOE) is to
  Determine the mean and standard deviation of a population
  Map all process steps and determine their average duration
  Establish the best graphing method to illustrate process performance
  Establish optimal process performance by finding the right settings for key process input variables

Show or Reveal the Answer

Establish optimal process performance by finding the right settings for key process input variables

Question: Eastern Batteries Inc. distributes battery products to retailers across the continental United States. Sales managers chart monthly sales of different batteries using:
  linear regression
  chi-squares
  frequency tables
  multiple regression

Show or Reveal the Answer

frequency tables

Explanation : Sales managers chart monthly sales of different batteries using frequency tables.
Frequency tables provide a visual display of variables such as monthly sales by dividing them into intervals and counting the number of scores or instances in each interval. Frequency tables are used as a basis for the construction of diagrams such as histograms and pie charts.


According to the lecture, which of the following tools can be described as the workhorse of DMAIC?

According to the lecture, a good project charter contains which of the following elements?

Thinking of the process mapping steps defined in the lecture, which of the following must be performed first?