Explore topic-wise MCQs in Statistical Quality Control.

This section includes 6 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.

X bar and S chart are more accurate in predicting out-of-control situations than the x bar and R charts, in the case of high sample size.

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

X bar chart should be interpreted before s chart if both are indicating out of control situations.

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

What is the value of the center line of the sample variance control chart?

A. ( bar{s}^2 )
B. s<sup>2</sup>
C. ( bar{s} )
D. ( overline{s^2} )
Answer» B. s<sup>2</sup>
Discussion
4.

The control charts based directly on the sample variance are called ____________

A. s Control charts
B. <sup>2</sup> Control charts
C. s<sup>2</sup> Control charts
D. Charts
Answer» D. Charts
Discussion
5.

Which one of these is correct to evaluate the mean standard deviation of the process samples?

A. ( bar{s} = frac{ sum_{i=1}^m (n_i-1) s_i^2}{ sum_{i=1}^m n_i} )
B. ( bar{s} = left[ frac{ sum_{i=1}^m (n_i-1) s_i^2}{ sum_{i=1}^m n_i-m} right]^2 )
C. ( bar{s} = left[ frac{ sum_{i=1}^m (n_i-1) s_i^2}{ sum_{i=1}^m n_i-m} right]^{1/2} )
D. ( bar{s} = frac{ sum_{i=1}^m (n_i-1) s_i^2}{ sum_{i=1}^m n_i-m} )
Answer» D. ( bar{s} = frac{ sum_{i=1}^m (n_i-1) s_i^2}{ sum_{i=1}^m n_i-m} )
Discussion
6.

When the sample size is variable, which one of these can be used to evaluate the value of x double bar?

A. ( frac{ sum_{i=1}^m n_i bar{x_i}}{ sum_{i=1}^n n_i} )
B. ( frac{ sum_{i=1}^n n_i bar{x_i}}{ sum_{i=1}^m n_i} )
C. ( frac{ sum_{i=1}^n n_i bar{x_i}}{ sum_{i=1}^n n_i} )
D. ( frac{ sum_{i=1}^m n_i bar{x_i}}{ sum_{i=1}^m n_i} )
Answer» E.
Discussion