MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
A change of process mean changes the value of Ci>Ci-1, so we can say that the process mean has shifted upwards. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Upward or downward shifts in the Cusum value, directly indicate changes in process condition. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
If the value of xi=9.29, and Ci-1=-2.56, what will be the value of the cumulative sum for this sample, if the value of 0=10? |
| A. | -3.27 |
| B. | -5.13 |
| C. | 3.27 |
| D. | 5.13 |
| Answer» B. -5.13 | |
| 4. |
Which of these is another form of the cumulative sum value plotted on the cumulative sum chart? |
| A. | (C_i=(x_i- )+ sum_{j=1}^{i-1} (x_j+ ) ) |
| B. | (C_i=(x_i- )+C_{i-1} ) |
| C. | (C_i=(x_i- )+ sum_{j=1}^{i-1} (x_j+2 ) ) |
| D. | (C_i=(x_i- )-C_{i-1} ) |
| Answer» C. (C_i=(x_i- )+ sum_{j=1}^{i-1} (x_j+2 ) ) | |
| 5. |
Which of these conditions don t describe an assignable cause in the process? |
| A. | A positive shift in the Cusum value |
| B. | A negative shift in the Cusum value |
| C. | Random change in Cusum value |
| D. | Continuous upward drift of Cusum value after a continuous downward drift in the Cusum value |
| Answer» D. Continuous upward drift of Cusum value after a continuous downward drift in the Cusum value | |
| 6. |
A significant trend upwards in the process cumulative sum chart indicates ____________ |
| A. | Shifting of mean in the positive direction |
| B. | Shifting of mean in the negative direction |
| C. | No shift in the process condition |
| D. | No shift in the mean |
| Answer» B. Shifting of mean in the negative direction | |
| 7. |
How are the changes in the conditions of the process, known using the Cusum charts? |
| A. | By the change in Cusum value |
| B. | By the change in the sample standard deviation |
| C. | By plotting a s chart first |
| D. | By plotting an R chart first |
| Answer» B. By the change in the sample standard deviation | |
| 8. |
Cumulative control charts were first presented by ____________ |
| A. | Shewhart |
| B. | ASQC |
| C. | ASQ |
| D. | Page |
| Answer» E. | |