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. |
The proposed control charts on residuals are quite good than the GCC. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The Mortell and Runger model did not propose to monitor the range of stream s means at time t. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Mortell and Runger proposed monitoring the average at time t of the means across all the streams with _________ control chart to detect an overall assignable cause. |
| A. | A cusum |
| B. | A EWMA |
| C. | A p-chart |
| D. | An individuals |
| Answer» E. | |
| 4. |
What is the correct value of cross correlation given by the Mortell and Runger model? |
| A. | ( = frac{2 _a^2}{( _a^2+ ^2)} ) |
| B. | ( = frac{4 _a^2}{( _a^2+ ^2)} ) |
| C. | ( = frac{ _a^2}{( _a^2+ ^2)} ) |
| D. | ( = frac{2 _a^2}{( _a^2- ^2)} ) |
| Answer» D. ( = frac{2 _a^2}{( _a^2- ^2)} ) | |
| 5. |
The model given by Mortell and Runger represents two types of variability, a2 accounting for the variance over time ___________ and 2 accounting for the variation between the streams at specific time t. |
| A. | Common to all streams |
| B. | Specific to one stream |
| C. | Specific to 2 streams |
| D. | Specific to a group of 3 streams |
| Answer» B. Specific to one stream | |
| 6. |
What does the term xtjk correspond to in the model proposed by Mortell and Runger? |
| A. | k Th measurement on the jTh stream at time t |
| B. | j Th measurement on the kTh stream at time t |
| C. | t Th measurement on the jTh stream at time k |
| D. | k Th measurement on the tTh stream at time j |
| Answer» B. j Th measurement on the kTh stream at time t | |
| 7. |
Which of these is the correct model proposed for MSP by Mortell and Runger to accommodate the practical case of the dependent streams? |
| A. | x<sub>tjk</sub> = A<sub>t</sub> + <sub>tjk</sub> |
| B. | x<sub>tjk</sub> = + A<sub>t</sub> + <sub>tjk</sub> |
| C. | x<sub>tjk</sub> = A<sub>t</sub> <sub>tjk</sub> |
| D. | x<sub>tjk</sub> = + A<sub>t</sub> <sub>tjk</sub> |
| Answer» C. x<sub>tjk</sub> = A<sub>t</sub> <sub>tjk</sub> | |
| 8. |
Dependent streams of an MSP are also called ____________ |
| A. | Accuracy streams |
| B. | Cross Acceptance |
| C. | Cross-correlated |
| D. | Uncorrelated |
| Answer» D. Uncorrelated | |
| 9. |
Which of these is one of the drawbacks of GCC? |
| A. | Each stream does not need to be sampled at a time |
| B. | There is no information about nonextreme streams at each trial. Thus no past value related EWMA can be constructed |
| C. | It can t be used for MSPs |
| D. | It is very easy to construct |
| Answer» C. It can t be used for MSPs | |
| 10. |
Which of these is a lower bound on the ARL(2)0? |
| A. | (ARL(2)_0=2 frac{s^r-1}{s-1} ) |
| B. | (ARL(2)_0= frac{2(r-1)}{s^r-1} ) |
| C. | (ARL(2)_0= frac{s^r-1}{s-1} ) |
| D. | (ARL(2)_0= frac{s^r-1}{2(r-1)} ) |
| Answer» E. | |
| 11. |
Who was not one of the scientists who used the Markov chain approach to compute the two sided in-control ARL for any GCC of any MSP? |
| A. | Mortell |
| B. | Robertson |
| C. | Runger |
| D. | Stephenson |
| Answer» B. Robertson | |
| 12. |
Who gave the Markov chain approach to compute the ARL(2)0? |
| A. | Brook and Evans |
| B. | Mortell |
| C. | Runger |
| D. | Nelson |
| Answer» B. Mortell | |
| 13. |
Who was the first person to find out the one sided in-control ARL for any event of consecutive largest values being obtained from a single process stream? |
| A. | Bond |
| B. | Nelson |
| C. | Robertson |
| D. | Clarkes |
| Answer» C. Robertson | |
| 14. |
The expected number of trials until r consecutive largest or smallest means come from the same stream, is called _________ of the MSP. |
| A. | ARL |
| B. | ARL(1)<sub>0</sub> |
| C. | ARL(2)<sub>0</sub> |
| D. | Predicted ARL |
| Answer» D. Predicted ARL | |
| 15. |
Which of these is a suitable pair of s, r, while using the GCC? |
| A. | 2, 6 |
| B. | 3, 7 |
| C. | 9, 2 |
| D. | 6, 3 |
| Answer» C. 9, 2 | |