# 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