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.

Tabular Cusums can be constructed for both, individual measurements, and the averages of the rational subgroups.

A. True
B. False
Answer» B. False
Discussion
2.

Only the value of lower cusum can be negative.

A. True
B. False
Answer» C.
Discussion
3.

The V-mask procedure was proposed by ___________

A. Crowder
B. Roberts
C. Brinson
D. Barnard
Answer» E.
Discussion
4.

If the value of C i-1+S2+k is lesser than (-1), what will be the value of Ci equal to?

A. Lesser than -1
B. Higher than 1
C. Lower than 0
D. 0
Answer» E.
Discussion
5.

A cusum for a normal variance has the value of lower cusum equal to ___________

A. (C_i^+=min u2061(0,C_{i-1}^- + S^2 + k) )
B. (C_i^-=max u2061(0,C_{i-1}^- + S^2 + k) )
C. (C_i^+=max u2061(0,C_{i-1}^- + S^2 + k) )
D. (C_i^-=min u2061(0,C_{i-1}^- + S^2 + k) )
Answer» E.
Discussion
6.

A cusum for normal variance is having the value of upper cusum equal to __________

A. (C_i^+=max u2061(0,C_{i-1}^+ + S^2 k) )
B. (C_i^+=max u2061(0,C_{i-1}^+ + S^2 + k) )
C. (C_i^+=max u2061(0,C_{i-1}^+ ^2 + k) )
D. (C_i^+=max u2061(0,C_{i-1}^+ + ^2 + k) )
Answer» C. (C_i^+=max u2061(0,C_{i-1}^+ ^2 + k) )
Discussion
7.

If the deployment of the cusum is extended to the case of averages of the rational subgroups where sample size n>1, what will be done?

A. The value of x<sub>i</sub> be replaced by <sub>i</sub>
B. The value of <sub>i</sub> be replaced by x<sub>i</sub>
C. The value of C<sub>i</sub><sup>+</sup> be replaced by value of C<sub>i</sub><sup> </sup>
D. The value of C<sub>i</sub><sup> </sup> be replaced by the value of C<sub>i</sub><sup>+</sup>
Answer» B. The value of <sub>i</sub> be replaced by x<sub>i</sub>
Discussion
8.

Who was the first person to recommend plotting the cusum charts for mean and standard deviation on same graph?

A. Hawkins
B. Roberts
C. Atkinson
D. Crowder
Answer» B. Roberts
Discussion
9.

Which of these is an indication of out-of-control process with low standard deviation?

A. Increase in the value of S<sub>i</sub><sup>+</sup>
B. Decrease in the value of S<sub>i</sub><sup>+</sup> with increase in the value of S<sub>i</sub><sup> </sup>
C. Increase in the value of S<sub>i</sub><sup> </sup>
D. Decrease in the value of S<sub>i</sub><sup> </sup> with decrease in the value of S<sub>i</sub><sup> </sup>
Answer» D. Decrease in the value of S<sub>i</sub><sup> </sup> with decrease in the value of S<sub>i</sub><sup> </sup>
Discussion
10.

If the process standard deviation increases, how will the cusum chart for monitoring process variability indicate the out-of-control state?

A. The value of S<sub>i</sub><sup>+</sup> will increase
B. The value of S<sub>i</sub><sup>+</sup> will decrease
C. The value of S<sub>i</sub><sup> </sup> will decrease with decrease in the value of S<sub>i</sub><sup>+</sup>
D. The value of S<sub>i</sub><sup> </sup> will increase
Answer» B. The value of S<sub>i</sub><sup>+</sup> will decrease
Discussion
11.

Which of these is not an assumption made for the construction of the tabular Cusum charts?

A. The selected variable varies on a normal distribution
B. The mean of the normal distribution is available
C. The estimate or the exact value of the standard deviation of the variable
D. The assumptions are very inconsistent with phase II application of SPC
Answer» E.
Discussion
12.

Which of these is not one of the assumptions made for the construction of Tabular Cusum charts for the individual measurements?

A. The selected variable varies according to a lognormal distribution
B. The selected variable varies according to a normal distribution
C. The selected variable varies according to a binomial distribution
D. The selected variable varies according to an exponential distribution
Answer» C. The selected variable varies according to a binomial distribution
Discussion
13.

The tabular Cusums are made to monitor the ____________ of the process.

A. Variance
B. Mean
C. Standard deviation
D. Capability
Answer» C. Standard deviation
Discussion
14.

Which of these is a name of any way to represent the Cusum charts?

A. Logarithmic
B. Algorithmic
C. Exponential
D. Normal
Answer» C. Exponential
Discussion
15.

How many ways are there to represent the Cusum on the Cusum charts?

A. 3
B. 4
C. 2
D. 5
Answer» D. 5
Discussion