MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
Count rate of a defect is defined as _____________ |
| A. | Defects per unit |
| B. | Average number of defects per unit |
| C. | Total number of nonconformities |
| D. | Occurrence of n defects in N number of units |
| Answer» E. | |
| 2. |
The sample for the control chart for nonconformities is assumed to have, a variable sample size, and the sample conformities distributed according to Normal distribution. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
For a control chart for nonconformities, the sample size can only be 1. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
If xi=total number of nonconformities in a sample of ni inspection units, and there are N samples of different sample size, and x varies according to a Poisson distribution, what will be the value of center line of the u-chart? |
| A. | \(\bar{u} = \frac{\sum_{i=1}^N \frac{2x_i}{n_i}}{N}\) |
| B. | \(\bar{u} = \frac{\sum_{i=1}^N \frac{x_i}{2n_i}}{2N}\) |
| C. | \(\bar{u} = \frac{\sum_{i=1}^N \frac{x_i}{n_i}}{N}\) |
| D. | \(\bar{u} = \frac{\sum_{i=1}^N \frac{x_i}{n_i}}{2N}\) |
| Answer» D. \(\bar{u} = \frac{\sum_{i=1}^N \frac{x_i}{n_i}}{2N}\) | |
| 5. |
The control chart used to inspect the process state by using the average number of nonconformities per unit data, is called _______________ |
| A. | u-chart |
| B. | c-chart |
| C. | p-chart |
| D. | R-chart |
| Answer» B. c-chart | |
| 6. |
With c-chart, which of these is used to analyze nonconformity data? |
| A. | X bar charts |
| B. | R charts |
| C. | Cause and Effect diagram |
| D. | Tolerance Diagram |
| Answer» D. Tolerance Diagram | |
| 7. |
For c=13.11, what will be the value of LCL for the c-chart? |
| A. | 23.97 |
| B. | 10.86 |
| C. | 8.84 |
| D. | 2.24 |
| Answer» E. | |
| 8. |
If the average number of nonconformities in a preliminary sample of a process is 19.67, which of these represents the value of UCL for a c-chart for this process output? |
| A. | 19.67 |
| B. | 6.37 |
| C. | 32.97 |
| D. | 25.77 |
| Answer» D. 25.77 | |
| 9. |
When there is no standard given, the value of LCL for the c-chart is given by ___________ |
| A. | LCL=\(\bar{c}-3\sqrt{\bar{c}}\) |
| B. | LCL=\(\bar{c}+2\sqrt{\bar{c}}\) |
| C. | LCL=\(\bar{c}-2\sqrt{\bar{c}}\) |
| D. | LCL=\(\bar{c}+3\sqrt{\bar{c}}\) |
| Answer» E. | |
| 10. |
The center line for the control chart for nonconformities is representing the value equal c, which is ____________ |
| A. | The total number of nonconformities |
| B. | The average number of conformities in a preliminary sample |
| C. | The total number of nonconforming products |
| D. | The total number of conforming products |
| Answer» C. The total number of nonconforming products | |
| 11. |
What will be the value of the 3-sigma Upper control limit for the c chart when standard is given? |
| A. | UCL = c + 3√c |
| B. | UCL = c – √c |
| C. | UCL = c + √c |
| D. | UCL = c + 2√c |
| Answer» B. UCL = c – √c | |
| 12. |
Which of these is not an assumption of the c-chart? |
| A. | Number of potential locations for nonconformities should be large |
| B. | Probability of occurrence of nonconformities should be small |
| C. | Probability of occurrence of nonconformities should be variable |
| D. | Probability of occurrence of nonconformities should be constant |
| Answer» D. Probability of occurrence of nonconformities should be constant | |
| 13. |
Which of these is an assumption made for designing a control chart for noncorformities? |
| A. | Normal Distribution |
| B. | Poisson Distribution |
| C. | Lognormal Distribution |
| D. | Weibull Distribution |
| Answer» C. Lognormal Distribution | |
| 14. |
The c-control chart is plotted for _____________ |
| A. | Fraction nonconforming |
| B. | Number of nonconformities per unit |
| C. | Number of defects observed |
| D. | Deviation from median of the defects in samples |
| Answer» D. Deviation from median of the defects in samples | |
| 15. |
A nonconforming item has at least ____________ conformities. |
| A. | 4 |
| B. | 3 |
| C. | 1 |
| D. | 2 |
| Answer» D. 2 | |
| 16. |
The event of a specification not satisfied at one point of a product, is called ____________ |
| A. | Nonconformity |
| B. | Non-defectiveness |
| C. | Un-specification |
| D. | Non-specification |
| Answer» B. Non-defectiveness | |