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. |
15. There is no need of revision of control limits once calculated by the equations of control limits. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Process standard deviation is necessarily equal to the sample standard deviation of the same process. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
What type of chart will be used to plot the number of defectives in the output of any process? |
| A. | x bar chart |
| B. | R chart |
| C. | c chart |
| D. | p chart |
| Answer» E. | |
| 4. |
The natural variability of the process is measured by ____________ |
| A. | Process mean |
| B. | Sample standard deviation |
| C. | Process standard deviation |
| D. | Sample mean |
| Answer» D. Sample mean | |
| 5. |
Control limits are ___________ |
| A. | Limits defined by customers |
| B. | Limits driven by the natural variability of the process |
| C. | Limits driven by the inherent variability of the process |
| D. | Statistical limits |
| Answer» C. Limits driven by the inherent variability of the process | |
| 6. |
Is there any relationship between specification limits and control limits of and R charts? |
| A. | Yes, Specification limits = Control limits |
| B. | Yes, Control limits=Specification limits/2 |
| C. | No |
| D. | Yes, Control limits*0.5 = Specification limits |
| Answer» D. Yes, Control limits*0.5 = Specification limits | |
| 7. |
A tolerance diagram is also called ____________ |
| A. | Scatter diagram |
| B. | Defect concentration diagram |
| C. | Histogram |
| D. | Tier chart |
| Answer» E. | |
| 8. |
For any process, the sample ranges are, 1.2,1.5,1.1,1.4,1.5. The subgroup size is 5. What will be the process standard deviation? Given: d2=2.326 and A2=0.577 |
| A. | 0.576 |
| B. | 2.322 |
| C. | 0.511 |
| D. | 2.463 |
| Answer» B. 2.322 | |
| 9. |
The process standard deviation is given by __________ |
| A. | /d<sub>2</sub> |
| B. | d<sub>2</sub> |
| C. | 1/d<sub>2</sub> |
| D. | /d |
| Answer» B. d<sub>2</sub> | |
| 10. |
Process capability generally uses __________ |
| A. | Specifications |
| B. | Control Limits |
| C. | Process standard deviation |
| D. | Mean of any one sample |
| Answer» C. Process standard deviation | |
| 11. |
Which term is having a closest meaning as Sampling Distributions? |
| A. | Control charts |
| B. | On site inspection |
| C. | Whole lot inspection |
| D. | Acceptance sampling |
| Answer» B. On site inspection | |
| 12. |
In phase I application of and R chart, the control limits obtained from the equations are treated as ____________ |
| A. | Final limits |
| B. | Trial limits |
| C. | Warning limits |
| D. | Pattern limits |
| Answer» C. Warning limits | |
| 13. |
Which of these gives the correct value of A2 used in the equation for control limits of a control chart? |
| A. | ( frac{3}{d_2 sqrt{n}} ) |
| B. | ( frac{3}{ sqrt{n}} ) |
| C. | ( frac{3}{d_2} ) |
| D. | ( frac{3}{ sqrt{d_2}} ) |
| Answer» B. ( frac{3}{ sqrt{n}} ) | |
| 14. |
In the general equation of UCL of a control chart, for any chart, which of these is used as the estimator of ? |
| A. | ( bar{x} ) |
| B. | ( bar{R} ) |
| C. | ( bar{ bar{x}} ) |
| D. | ( bar{ bar{R}} ) |
| Answer» D. ( bar{ bar{R}} ) | |
| 15. |
LCL for the R chart is given by __________ |
| A. | D<sub>3</sub> |
| B. | D<sub>2</sub> |
| C. | D<sub>3</sub> |
| D. | d<sub>2</sub> |
| Answer» B. D<sub>2</sub> | |