Explore topic-wise MCQs in Statistical Quality Control.

This section includes 14 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.

Sample size is allowed to vary for the construction of the DNOM based control charts.

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

Standardized R chart which uses control limits D3 and D4 has the value of \(R_i^s\) = _________

A. \(R_i^s=\frac{3R_i}{R_j}\)
B. \(R_i^s=\frac{R_i}{2R_j}\)
C. \(R_i^s=\frac{2R_i}{R_j}\)
D. \(R_i^s=\frac{R_i}{R_j}\)
Answer» E.
Discussion
3.

Which of these will work correctly and efficiently, when the process standard deviations are different for different part numbers?

A. Standardized x bar and R charts
B. Standardized attribute charts
C. DNOM charts
D. Both, the cusum and EWMA charts
Answer» B. Standardized attribute charts
Discussion
4.

Standard hypothesis testing procedures are used to compare __________ process average to a desired process target to determine whether the process mean is different from the target.

A. New
B. Historical
C. Correct
D. Disturbed
Answer» C. Correct
Discussion
5.

Which of these does not need to have the nominal value specified frequently?

A. When part has two-sided specifications
B. When part has one-sided specifications
C. When the part can’t have one sided specifications
D. When the part has either one-sided or two sided specifications
Answer» C. When the part can’t have one sided specifications
Discussion
6.

What is used instead of Nominal values when the nominal value is not given in the case of DNOM approach?

A. Historical process standard deviation
B. New standard deviation
C. Historical process average
D. Historical process variance
Answer» D. Historical process variance
Discussion
7.

Which of these is true for DNOM approach?

A. The sample size is variable
B. The process standard deviation is different for all parts
C. The sample size varies from one part to another
D. The sample size remains same for all parts
Answer» E.
Discussion
8.

Which of these assumptions are made while using the DNOM approach?

A. The process standard deviation is same for all parts
B. The process standard deviation is different for all parts
C. The samples size is variable
D. The sample size is 1
Answer» B. The process standard deviation is different for all parts
Discussion
9.

How many samples are generally taken before calculating the control limits for the DNOM x bar and R charts?

A. 10
B. 40
C. 35
D. 20
Answer» E.
Discussion
10.

If in a manufacturing process, the measurements for a certain dimension for a part are, 50, 51 and 52; where the nominal value of the dimension measured is 50, what will be the DNOM mean?

A. 1
B. 50
C. 51
D. 0.33
Answer» B. 50
Discussion
11.

The mean of the variable measured is replaced by the mean of ________ value in the case of the DNOM chart.

A. Normal value
B. Deviation from normal
C. Range
D. Deviation from normal range
Answer» C. Range
Discussion
12.

If the Mi is the actual sample measurement, and TA is a nominal value, what will be the DNOM?

A. xi = Mi – 2TA
B. xi = Mi – TA
C. xi = 2TA – Mi
D. xi = TA + Mi
Answer» C. xi = 2TA – Mi
Discussion
13.

Which of these is used as a technique for process control for short production runs?

A. Using deviation from nominal to plot the control chart
B. Using the variable value to plot the control chart
C. Using the variable change to plot the control chart
D. Using the variable decrease or increase to plot the chart
Answer» B. Using the variable value to plot the control chart
Discussion
14.

Which of these is the correct expansion of DNOM?

A. Deviation from Lognormal
B. Derived from normal
C. Deviation from normal
D. Deviation from normality
Answer» D. Deviation from normality
Discussion