Week 6 TQM Study Guide
1. (TCO 12) Characteristics of the population are called
A ) sample spaces.
B ) random variables.
C ) statistics.
D ) parameters.
2. (TCO 11) A bank observes that most customer complaints come from only a small subset of its total customer base. This is an example of
A ) clustering.
B ) the Pareto principle.
C ) skewing.
D ) the central limit theorem.
3. (TCO 11) Instituting controls to make sure that improvements do not erode over time is often referred to as
A ) holding the gains.
B ) poka yoke.
C ) control charting.
D ) process management.
4. (TCO 12) The sampling method where every item in the population has an equal probability of being selected is called
A ) simple random sampling.
B ) stratified sampling.
C ) systematic sampling.
D ) judgment sampling.
5. (TCO 12) The component of statistical methodology that involves the collection, organization, and description of data is called
A ) descriptive statistics.
B ) renewal theory.
C ) inferential statistics.
D ) predictive statistics.
6. (TCO 11) Which of the following are not steps described as part of Juran’s “breakthrough sequence?”
A ) proof of the need
B ) project identification
C ) remedial journey
D ) None of the above
7. (TCO 11) A statistical technique that is useful for interpreting scatter diagrams is
A ) the average.
B ) correlation analysis.
C ) the standard deviation.
D ) nominal group technique.
8. (TCO 12) Everything else being remaining constant, when the sample size _______, sampling error decreases.
A ) increases
B ) decreases
C ) stays constant
D ) none of the above
9. (TCO 12) Calculating the average value of 5 sample measurements of door width is an example of
A ) descriptive statistics.
B ) statistical inference.
C ) predictive statistics.
D ) All of the above
10. (TCO 12) _____ is the process of drawing conclusions about unknown characteristics of a population from data.
A ) Logical inference
B ) Post-data inference
C ) Statistical inference
D ) Random inference
11. (TCO 12) Which of the following constitutes an approach to reducing sampling error?
A ) cross-checking research designs with knowledgeable analysts
B ) questioning the assumption that tomorrow’s and today’s population are comparable
C ) taking a larger sample from the population
D ) reduce conditions that contribute to dissimilar population segments
12. (TCO 12) Partitioning a population into hierarchical groups or levels, and selecting a sample from each group or level is known as
A ) simple random sampling.
B ) stratified sampling.
C ) systematic sampling.
D ) judgment sampling.
13. (TCO 12) All of the following are illustrated by the Red Bead Experiment except that
A ) management is responsible for the system.
B ) day to day variation of a Willing Worker came entirely from the process itself.
C ) special cause variation can be predicted.
D ) numerical goals are often meaningless.
14. (TCO 12) A system governed only by common cause variation is a system that
A ) insures high productivity.
B ) is stable.
C ) meets a customer’s quality specifications.
D ) has zero natural variation.
15. (TCO 11) Which of the following tools is most useful for viewing the variability of a quality characteristic?
A ) affinity diagram
B ) cause and effect diagram
C ) histogram
D ) fishbone diagram
16. (TCO 12) Acting on every result as if it were a special cause of variation is known as
A ) improvement.
B ) planning.
C ) tampering.
D ) None of the above
17. (TCO 11) The Deming cycle is based on the premise that improvement comes from
A ) the application of knowledge.
B ) financial investment.
C ) Automation.
D ) clearly defined numerical performance goals.
18. (TCO 11) A ______ identifies the sequence of activities or the flow of materials and information in a process.
A ) cause-and-effect diagram
B ) scatter diagram
C ) flowchart
D ) affinity diagram
19. (TCO 11) A run chart is a line graph in which the vertical axis represents the _____ and the horizontal axis defines the _____.
A ) time scale, measurement
B ) cause, effect
C ) frequency, time scale
D ) measurement, time scale
20. (TCO 11) In which stage of the Deming philosophy is a plan implemented on a trial basis?
A ) study
B ) investigate
C ) do
D ) act
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