MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Type I possibility in the phase II application of the Shewhart control charts with warning limits. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Shewhart control charts are better for phase II applications than the Cusum charts. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
What is the name of the quantity plotted Cion Cusum charts? |
| A. | Cumulative sum from ith sample |
| B. | Cumulative sum to ith sample |
| C. | Cumulative sum to and ith sample |
| D. | Cumulative sum from and ith sample |
| Answer» D. Cumulative sum from and ith sample | |
| 4. |
What is the value of the quantity plotter on the Cusum charts? |
| A. | \(C_i=\sum_{j=1}^i (\bar{x}_j-μ)\) |
| B. | \(C_i=\sum_{j=1}^i (\bar{x}_j+2μ)\) |
| C. | \(C_i=\sum_{j=1}^i (\bar{x}_j-2μ)\) |
| D. | \(C_i=\sum_{j=1}^i (\bar{x}_j+μ)\) |
| Answer» B. \(C_i=\sum_{j=1}^i (\bar{x}_j+2μ)\) | |
| 5. |
In which phase of SPC are the Cusum control charts are used? |
| A. | Phase I |
| B. | Phase II |
| C. | Both, phase I and II |
| D. | Neither in phase I nor in phase II |
| Answer» C. Both, phase I and II | |
| 6. |
What is the full form of the Cusum control charts? |
| A. | Curetted sum control charts |
| B. | Corrected sum control charts |
| C. | Compressive sum control charts |
| D. | Cumulative sum control charts |
| Answer» E. | |
| 7. |
Which of the error types are likely to occur when the warning limits are used with Shewhart control charts the phase II of SPC? |
| A. | Type I |
| B. | Type II |
| C. | Type I and Type II |
| D. | Type III |
| Answer» B. Type II | |
| 8. |
What is the effect of warning limits and other sensitizing rules over the average run length of the process? |
| A. | Increase |
| B. | Decrease |
| C. | Remains same |
| D. | Does not change the ARL |
| Answer» B. Decrease | |
| 9. |
Which of these can be applied to Shewhart control charts to enhance their performance in the phase II application of the SPC? |
| A. | Control limits |
| B. | Mean of the process |
| C. | Standard deviation of the process |
| D. | Warning limits |
| Answer» E. | |
| 10. |
Which of these is a reason why the Shewhart control charts are not used in phase II application of SPC? |
| A. | Because they can count larger shifts in process |
| B. | Because they can analyze information about the last sample observation |
| C. | Because they become insensitive to lower order process shifts |
| D. | Because they are impractical |
| Answer» D. Because they are impractical | |
| 11. |
Shewhart control charts are insensitive to ________ process shifts. |
| A. | Small (<1.5σ) |
| B. | Medium (1.5 σ<shift<3 σ) |
| C. | Big (>6 σ) |
| D. | Very Big |
| Answer» B. Medium (1.5 σ<shift<3 σ) | |
| 12. |
Which of these is a disadvantage of Shewhart control charts? |
| A. | Can be for both attributes and variables |
| B. | Gives process information |
| C. | Using only the information about the last sample observations |
| D. | Uses every information about the process |
| Answer» D. Uses every information about the process | |
| 13. |
Which of these is not one of the phenomenons likely to occur while the phase I application of SPC? |
| A. | Process likely to be out of control |
| B. | Process changing its state continuously between in-control and out-of-control |
| C. | Experiencing assignable causes |
| D. | Large shifts in the monitored parameters |
| Answer» C. Experiencing assignable causes | |
| 14. |
Which of the control charts are used in phase I application of SPC? |
| A. | Shewhart control charts |
| B. | Cusum control charts |
| C. | Both, Shewhart control charts and Cusum control charts |
| D. | Neither one of the Shewhart control charts or the Cusum control charts |
| Answer» B. Cusum control charts | |
| 15. |
Cusum control charts were originated in ____________ |
| A. | 1950s |
| B. | 1960s |
| C. | 1920s |
| D. | 1980s |
| Answer» B. 1960s | |