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

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