Quality Management work

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1. (TCO 11) The component of statistical methodology that includes the collection, organization, and summarization of data is called _____. (Points : 2)

descriptive statistics analytical statistics inferential statistics predictive statistics

2. (TCO 11) Which of the following requires the opinion of an expert to determine the location and characteristics of a definable sample group? (Points : 2)

Judgment sample Simple random sample Systematic sample Stratified sample

3. (TCO 11) The sampling method in which every item in the population has an equal probability of being selected is called which of the following? (Points : 2)

Simple random sampling Stratified sampling Systematic sampling Judgment sampling

4. (TCO 11) Sample _____ are often used as estimators of population _____. (Points : 2)

parameters, parameters statistics, statistics statistics, parameters parameters, statistics

5. (TCO 11) A system governed only by common cause variation is a system that exhibits which of the following? (Points : 2)

It is highly productive. It is stable. It meets a customer's quality specifications. It has zero natural variation.

6. (TCO 12) Flowcharts are best developed by which of the following? (Points : 2)

Computer graphics programs People not involved in the actual process to insure impartiality Industrial engineers with training in graphics People involved in the process that is under study

7. (TCO 12) Which of the following is not true regarding control charts? (Points : 2)

Control charts can be used to monitor a process for the existence of special cause variation. The major components of a control chart are the lower control limits, the center line, and the upper control limits. Control charts alone can determine the source of problems. Control charts are similar to run charts in that data is plotted versus time.

8. (TCO 12) Simple regression analysis is a tool that characterize relationships between a _______________ and _____________________. (Points : 2)

regression partner, simple partner dependant variable, one independant variable highly complex parameter, simple parameters mistake-proof variable, moving target

9. (TCO 12) Short, repeated patterns in a control chart, with alternating high peaks and low valleys, are known as _____. (Points : 2)

trends cycles spikes reciprocals

10. (TCO 12) If a process is neither capable nor in control, the appropriate first step is to _____. (Points : 2)

remove common causes redesign the equipment remove sources of special cause variation determine the process capability index

11. (TCO 12) Determine the sample standard deviation(s) for the following data: 8, 2, 3, 0, 1, and 5. (Points : 5)

s = 2.805 s = 3.266 s = 2.927 s = 3.578

12. (TCO 12) Six samples of subgroup size 6 (n=6) were collected. Determine the upper control limit (UCL) for an X-Bar chart if the mean of the sample averages is 4.7 and the mean of the sample ranges is 0.35. CHART (Points : 5)

UCL = 4.86905 UCL = 4.90195 UCL = 4.72250 UCL = 5.05805

13. (TCO 12) Twenty samples of subgroup size 3 (n=3) were collected for a variable measurement. Determine the upper control limit (UCL) for an R-chart if the mean of the sample ranges equals 4.4. TABLE (Points : 5)

UCL = 9.3016 UCL = 1.4696 UCL = 11.3256 UCL = 8.8176

1. (TCO 11) .Briefly describe the 5 types of Sampling Methods.

2. (TCO 11) Define standard error of the mean.

3. (TCO 11) What is a judgment sample, and discuss why it is not a preferred method of sampling?

4. (TCO 12) Define pre-control and explain pre-control benefits organization

5. (TCO 12) Outline the basic steps for setting up a control chart to monitor a process and determine its process capability