Explore topic-wise MCQs in Statistical Quality Control.

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
Discussion
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.
Discussion
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.
Discussion
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)} )
Discussion
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
Discussion
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
Discussion
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>
Discussion
8.

Dependent streams of an MSP are also called ____________

A. Accuracy streams
B. Cross Acceptance
C. Cross-correlated
D. Uncorrelated
Answer» D. Uncorrelated
Discussion
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
Discussion
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.
Discussion
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
Discussion
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
Discussion
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
Discussion
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
Discussion
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
Discussion