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# GSCM 326 Total Quality Management Week 6 Statistical Thinking and Process Improvement CheckPoint Answer

GSCM 326 Total Quality Management Week 6 Statistical Thinking and Process Improvement_CheckPoint Answer

GSCM 326 Total Quality Management Week 6 Statistical Thinking and Process Improvement_CheckPoint Answer

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

Student Answer: descriptive statistics
analytical statistics
inferential statistics
predictive statistics

2. Question : (TCO 11) Characteristics of the population are called _____.

Student Answer: point estimates
random variables
statistics
parameters

3. Question : (TCO 11) Which of the following constitutes an operational approach to reducing sampling error?

Student Answer: Cross-checking research designs with knowledgeable analysts
Questioning the assumption that tomorrow’s and today’s population are comparable
Taking a larger sample from the population
Reducing conditions that contribute to dissimilar population segments

4. Question : (TCO 11) Calculating the average value of five sample measurements of door width is an example of which of the following?

Student Answer: Descriptive statistics
Statistical inference
Predictive statistics
Analytical statistics

5. Question : (TCO 11) Acting on every result as if it were a special cause of variation is known as which of the following?

Student Answer: Stabilizing
Bullwhipping
Tampering
Monitoring

6. Question : (TCO 12) A statistical technique that is useful for interpreting scatter diagrams is which of the following?

Student Answer: The average
Correlation analysis
The standard deviation
Nominal group technique

7. Question : (TCO 12) Another name for a cause-and-effect diagram is which of the following?

Student Answer: Histogram
Run chart
Check sheet
Fishbone diagram

8. Question : (TCO 12) To enable a service process to be mistake-proof, unlike manufacturing processes, the _____ must be considered.

Student Answer: process owner
customer
environment
manager

9. Question : (TCO 12) Which of the following pairs of charts are used together?

Student Answer: X-Bar chart and p-chart
R-chart and p-chart
R-chart and s-chart
X-Bar chart and R-chart

10. Question : (TCO 12) A p-chart is also called a _____.

Student Answer: pre-control chart
probability chart
fraction defective chart
process capability chart

11. Question : (TCO 12) Determine the sample standard deviation(s) for the following data: 7, 8, 2, 1, 3, and 5.

12. Question : (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

13. Question : (TCO 12) Twenty samples of subgroup size 6 (n=6) 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.
Factors for calculating control limits:
n A2 D3 D4
2 1.880 0 3.267
3 1.023 0 2.575
4 0.729 0 2.282
5 0.577 0 2.115
6 0.483 0 2.004

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1. Question : (TCO 11) What are the advantages of studying a sample from the population instead of studying the entire population though a census?

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

3. Question : (TCO 11) Differentiate between an enumerative study and an analytic study. Which type of study is more appropriate for descriptive statistics, hypothesis testing on the population mean, and time-series analysis?

4. Question : (TCO 12) Explain the difference between Type I and Type II errors in the context of a control chart

5. Question : (TCO 12) Define the term statistical process control.

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