## GSCM 326 Week 6 Quiz Latest

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GSCM 326 Week 6 Quiz Latest

GSCM326

GSCM 326 Week 6 Quiz Latest

GSCM 326 Week 6 Quiz Latest

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

• descriptive statistics.
• probability distribution.
• statistical inference.
• predictive statistics.

Question 2. Question : (TCO 11) A simple random sample is often use to estimate

• point estimates.
• random variables.
• statistics.
• population parameters.

Question 3. Question : (TCO 11) Which of the following is not a type of sampling scheme?

• Stratified sampling
• Biased sampling
• Cluster sampling
• Judgment sampling

Question 4. Question : (TCO 11) If _____ is not used, _____ may be introduced.

• random sampling; systemic error
• judgment; bias
• random sampling; bias
• stratified sampling; systemic error

Question 5. Question : (TCO 11) If the variation in the process is due to common causes alone, the process is said to be

• out of control.
• in statistical control.
• in precontrol.
• out of capability.

Question 6. Question : (TCO 12) _____ are special types of data collection forms in which the results can be interpreted on the form directly without additional processing.

• Check sheets
• Run charts
• Data sheets
• Control charts

Question 7. Question : (TCO 12) The Pareto diagram was named after whom?

• Juran
• An Italian economist
• Imai
• Kano

Question 8. Question : (TCO 12) Attribute data are

• discrete.
• not measurable.
• nonrandom.
• continuous.

Question 9. Question : (TCO 12) An alternative to using the R-chart is the

• NP-chart.
• S-chart.
• C-chart.
• P-chart.

Question 10. Question : (TCO 12) Process capability calculations make little sense if the process

• data were taken over a period of time.
• is not in statistical control.
• variations are due to common causes.
• is not initiated.
1. Question : (TCO 12)Six samples of subgroup size 7 (n = 7) 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.

Factors for calculating control limits

n          A2        D3       D4

2          1.880   0          3.267

3          1.023   0          2.574

4          0.729   0          2.282

5          0.577   0          2.114

6          0.483   0          2.004

7          0.419   0          1.924

Question 2. Question : (TCO 12) Twenty samples of subgroup size 2 (n = 2) 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                      2.574

4          0.729               0                      2.282

5          0.577               0                      2.114

6          0.483               0                      2.004