MCQOPTIONS
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MCQOPTIONS
This section includes 12 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 moving average span w at a time I is defined as ____________ |
| A. | (M_i= frac{x_i+x_{i-1}+ x_{w+1}}{w} ) |
| B. | (M_i= frac{x_i+x_{i-1}+ x_{w+1}}{i} ) |
| C. | (M_i= frac{x_i+x_{i-1}+ x_{i-w+1}}{w} ) |
| D. | (M_i= frac{x_i+x_{i-1}+ x_{i-w+1}}{i} ) |
| Answer» D. (M_i= frac{x_i+x_{i-1}+ x_{i-w+1}}{i} ) | |
| 2. |
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 | |
| 3. |
LCL for EWMA chart for Poisson distribution is written as ____________ |
| A. | LCL= ( _0-A_L sqrt{ frac{ _0}{2- } big {1-(1+ )^{2i} big }} ) |
| B. | LCL= ( _0+A_L sqrt{ frac{ _0}{2- } big {1-(1+ )^{2i} big }} ) |
| C. | LCL= ( _0+A_L sqrt{ frac{ _0}{2- } big {1-(1- )^{2i} big }} ) |
| D. | LCL= ( _0-A_L sqrt{ frac{ _0}{2- } big {1-(1- )^{2i} big }} ) |
| Answer» E. | |
| 4. |
What is the upper limit for the EWMA for Poisson data? |
| A. | UCL= ( _0+A_U sqrt{ frac{ _0}{2- } big {1-(1- )^{2i} big }} ) |
| B. | UCL= ( _0-A_U sqrt{ frac{ _0}{2- } big {1-(1- )^{2i} big }} ) |
| C. | UCL= ( _0-A_L sqrt{ frac{ _0}{2- } big {1-(1- )^{2i} big }} ) |
| D. | UCL= ( _0+A_L sqrt{ frac{ _0}{2- } big {1-(1- )^{2i} big }} ) |
| Answer» B. UCL= ( _0-A_U sqrt{ frac{ _0}{2- } big {1-(1- )^{2i} big }} ) | |
| 5. |
What is the value of EWMV? |
| A. | (S_i^2= (x_i-z_i)^2- (1+ ) S_{i-1}^2 ) |
| B. | (S_i^2= (x_i-z_i)^2 (1- ) S_{i-1}^2 ) |
| C. | (S_i^2= (x_i-z_i)^2- (1- ) S_{i-1}^2 ) |
| D. | (S_i^2= (x_i-z_i)^2+ (1- ) S_{i-1}^2 ) |
| Answer» E. | |
| 6. |
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 | |
| 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. |
What is the lower limit of the EWRMS chart? |
| A. | LCL= (3 _0 sqrt{ frac{ _{v,1- frac{ }{2}}^2}{v}} ) |
| B. | LCL= ( _0 sqrt{ frac{ _{v,1- frac{ }{2}}^2}{2v}} ) |
| C. | LCL= ( _0 sqrt{ frac{ _{v,1- frac{ }{2}}^2}{v}} ) |
| D. | LCL= ( frac{ _0}{2} sqrt{ frac{ _{v,1- frac{ }{2}}^2}{v}} ) |
| Answer» D. LCL= ( frac{ _0}{2} sqrt{ frac{ _{v,1- frac{ }{2}}^2}{v}} ) | |
| 9. |
EWRMS charts have the upper limit of ____________ |
| A. | UCL= ( _0 sqrt{ frac{ _{v, frac{ }{2}}^2}{v}} ) |
| B. | UCL= ( frac{ _0}{2} sqrt{ frac{ _{v, frac{ }{2}}^2}{v}} ) |
| C. | UCL= ( _0 sqrt{ frac{ _{v, frac{ }{2}}^2}{2v}} ) |
| D. | UCL= ( sqrt{ frac{ _{v, frac{ }{2}}^2}{v}} ) |
| Answer» B. UCL= ( frac{ _0}{2} sqrt{ frac{ _{v, frac{ }{2}}^2}{v}} ) | |
| 10. |
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 | |
| 11. |
Si2/ 2 has an approximate __________ distribution. |
| A. | Normal |
| B. | Lognormal |
| C. | Exponential |
| D. | Chi-square |
| Answer» E. | |
| 12. |
What is the value of EWMS? |
| A. | (S_i^2= (x_i- )^2-(1- ) S_{i-1}^2 ) |
| B. | (S_i^2= (x_i- )^2-(1+ ) S_{i-1}^2 ) |
| C. | (S_i^2= (x_i- )^2+(1- ) S_{i-1}^2 ) |
| D. | (S_i^2= (x_i- )^2+(1+ ) S_{i-1}^2 ) |
| Answer» D. (S_i^2= (x_i- )^2+(1+ ) S_{i-1}^2 ) | |