MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 error is described as the situation of the conclusion of the process state as out-of-control when it is in-control. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Control charts can be used very effectively in the process of hypothesis testing. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
OC curve can be used to determine the probability of _______ |
| A. | Type I error |
| B. | Type II error |
| C. | Both type I and type II error |
| D. | Neither type I nor type II error |
| Answer» C. Both type I and type II error | |
| 4. |
The chance and assignable cause terminology was developed by _______ |
| A. | Deming |
| B. | Hawthorne |
| C. | ISO |
| D. | Shewhart |
| Answer» E. | |
| 5. |
Chance causes of variation are also called ________ and assignable causes are also called _______ |
| A. | Common causes, special causes |
| B. | Special causes, common causes |
| C. | Variability causes, non-variability causes |
| D. | Non-variability causes, variability causes |
| Answer» B. Special causes, common causes | |
| 6. |
If a process has its operation with _________ causes of variation, it is said to be an out-of-control process. |
| A. | Chance |
| B. | Assignable |
| C. | Neither chance nor assignable |
| D. | Out-of-control |
| Answer» C. Neither chance nor assignable | |
| 7. |
Which of these is not a part of SPC’s 7 tools? |
| A. | Pareto chart |
| B. | Histogram |
| C. | Design of Experiments |
| D. | Check sheet |
| Answer» D. Check sheet | |
| 8. |
A process is said to be in the statistical control if it operates with ______ of variation. |
| A. | Chance causes |
| B. | Assignable causes |
| C. | Both chance and assignable causes |
| D. | Neither chance nor assignable causes |
| Answer» B. Assignable causes | |
| 9. |
Shifting of mean from the current value to a new value and remaining there, is called _____ shift of the mean. |
| A. | Continuous |
| B. | Abrupt |
| C. | Random |
| D. | Sustained |
| Answer» E. | |
| 10. |
If for a process, 18 out of 20 points are plotted above the CL but below the upper control limit, and only 2 of 20 are plotted between the center line and the lower control limit, what can we say about the process state? |
| A. | In-control |
| B. | Out-of-control |
| C. | Data is not enough to predict |
| D. | Process state is not dependent over this data |
| Answer» C. Data is not enough to predict | |
| 11. |
In the horizontal axis of a control chart displays _______ |
| A. | Sample number |
| B. | Time |
| C. | Either sample number or time |
| D. | Neither sample number or time |
| Answer» D. Neither sample number or time | |
| 12. |
The horizontal line in the control chart which shows the minimum value of a quality characteristic, before the process gets out-of-control, is called the _____ |
| A. | Upper control limit line |
| B. | Lower control limit line |
| C. | Desired value |
| D. | Center line |
| Answer» C. Desired value | |
| 13. |
The highest value that a quality characteristic can take before the process becomes out-of-control, is called ______ |
| A. | Center line |
| B. | Upper control limit |
| C. | Lower control limit |
| D. | Control limit |
| Answer» C. Lower control limit | |
| 14. |
The average value of the quality characteristic corresponding to in-control state is represented by _____ in the control charts. |
| A. | CL |
| B. | UCL |
| C. | LCL |
| D. | Sample number |
| Answer» B. UCL | |