MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Statistical Quality Control knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A modified control charts limit expression does not contain ___________ |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» D. | |
| 2. |
The approach of using a chart to monitor the fraction of nonconforming units or the fraction of the units exceeding the specifications, is called the ___________ |
| A. | Shewhart control charts |
| B. | Cusum charts |
| C. | EWMA charts |
| D. | Acceptance control charts |
| Answer» E. | |
| 3. |
When the type I error is specified, the LCL of the modified control chart is ___________ |
| A. | (LCL=LSL- left(Z_ - frac{Z}{ sqrt{n}} right) ) |
| B. | (LCL=LSL- left(Z_ + frac{Z}{ sqrt{n}} right) ) |
| C. | (LCL=LSL+ left(Z_ + frac{Z}{ sqrt{n}} right) ) |
| D. | (LCL=LSL+ left(Z_ - frac{Z}{ sqrt{n}} right) ) |
| Answer» E. | |
| 4. |
From which chart the initial estimate of the process variability is determined? |
| A. | R-chart |
| B. | c-chart |
| C. | p-chart |
| D. | Cusum charts |
| Answer» B. c-chart | |
| 5. |
If process variability shifts, the modified control charts are ____________ |
| A. | Not appropriate |
| B. | Totally appropriate |
| C. | Good to use |
| D. | Perfect for the mapping the shifts |
| Answer» B. Totally appropriate | |
| 6. |
To design a modified control chart, we must have a good estimate of _________ available. |
| A. | |
| B. | |
| C. | <sup>2</sup> |
| D. | process variance |
| Answer» C. <sup>2</sup> | |
| 7. |
____________ sigma limits are recommended for modified control charts. |
| A. | 4 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» C. 3 | |
| 8. |
When the type I error is not specified, the value of LCL of the modified control charts is ____________ |
| A. | (LCL=LSL+ left(Z_ - frac{3}{ sqrt{n}} right) sigma ) |
| B. | (LCL=LSL- left(Z_ + frac{3}{ sqrt{n}} right) sigma ) |
| C. | (LCL=LSL- left(Z_ - frac{3}{ sqrt{n}} right) sigma ) |
| D. | (LCL=LSL+ left(Z_ + frac{3}{ sqrt{n}} right) sigma ) |
| Answer» B. (LCL=LSL- left(Z_ + frac{3}{ sqrt{n}} right) sigma ) | |
| 9. |
Which of these is a correct expression for the UCL of the modified control charts when the type I error is not specified? |
| A. | (UCL=USL+ left(Z_ + frac{3}{ sqrt{n}} right) sigma ) |
| B. | (UCL=USL+ left(Z_ - frac{3}{ sqrt{n}} right) sigma ) |
| C. | (UCL=USL- left(Z_ - frac{3}{ sqrt{n}} right) sigma ) |
| D. | (UCL=USL- left(Z_ + frac{3}{ sqrt{n}} right) sigma ) |
| Answer» D. (UCL=USL- left(Z_ + frac{3}{ sqrt{n}} right) sigma ) | |
| 10. |
When the type I error is specified, which of these is correct expression for the UCL of the modified control charts? |
| A. | (UCL=USL- left(Z_ + frac{Z_ }{ sqrt{n}} right) sigma ) |
| B. | (UCL=USL- left(Z_ - frac{Z_ }{ sqrt{n}} right) sigma ) |
| C. | (UCL=USL+ left(Z_ + frac{Z_ }{ sqrt{n}} right) sigma ) |
| D. | (UCL=USL+ left(Z_ - frac{Z_ }{ sqrt{n}} right) sigma ) |
| Answer» C. (UCL=USL+ left(Z_ + frac{Z_ }{ sqrt{n}} right) sigma ) | |