MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
EWMV_IS_____?$ |
| A. | Exponentially weighted mean variability |
| B. | Exponentially weighted moving variance |
| C. | Exponentially weighted mean variance |
| D. | Exponentially weighted moving variability |
| Answer» C. Exponentially weighted mean variance | |
| 2. |
The EWMA chart can be used as a basis for a dynamic process-control algorithm. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of these can be used as a forecast of where the process mean will be at the next time period? |
| A. | p-chart |
| B. | c-chart |
| C. | EWMA chart |
| D. | R-chart |
| Answer» D. R-chart | |
| 4. |
The Poisson EWMA has considerably better ability to detect assignable causes than Shewhart c-chart. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
EWMA recursion is different in the case of the EWMA charts for normal data and EWMA charts for Poisson data. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
“AL” in the expression of the LCL of EWMA charts for Poisson distribution, is ______$ |
| A. | Lower control limit factor |
| B. | Lower allowance factor |
| C. | Life Allowance factor |
| D. | Last Allowance factor |
| Answer» B. Lower allowance factor | |
| 7. |
EWRMS chart is sensitive to ____? |
| A. | Process mean only |
| B. | Process standard deviation only |
| C. | Neither process mean nor standard deviation |
| D. | Both, process mean and standard deviation |
| Answer» E. | |
| 8. |
EWRMS chart plots ____ on the control chart. |
| A. | Exponentially weighted root moving square error |
| B. | Exponentially weighted root mean square error |
| C. | Exponentially weighted root mean signal error |
| D. | Exponentially weighted root moving signal error |
| Answer» C. Exponentially weighted root mean signal error | |
| 9. |
“Si2/σ2” has an approximate ____ distribution.$ |
| A. | Normal |
| B. | Lognormal |
| C. | Exponential |
| D. | Chi-square |
| Answer» E. | |
| 10. |
Who were the first people to introduce the EWMA charts to monitor process standard deviation? |
| A. | McGregor and Harris |
| B. | Harris and Roberts |
| C. | Crowder and Roberts |
| D. | Harris and Roberts |
| Answer» B. Harris and Roberts | |
| 11. |
What is the initial S in EWMS stand for? |
| A. | Severity error |
| B. | Signal error |
| C. | Square error |
| D. | Simple error |
| Answer» D. Simple error | |