Mth 302 solved Quizs

1 If you decrease the size of the samples (i.e., the subgroup size) for an chart, it is necessary to recalculate
your control limits to reflect wider limits.
A) True
B) False
2 A p-chart is a type of process control chart that can be used for plotting the proportion of non-conforming sampled
items.
A) True
B) False
3 An in-control process will always exhibit special cause variation, which is not a reason for concern.
A) True
B) False
4 If the Cp index is unacceptable, the Cpk index may nonetheless indicate a capable process.
A) True
B) False
5 A moving range (MR) chart is appropriate to monitor variation when every item is being inspected (n = 1) since the
range (R) cannot be calculated.
A) True
B) False
6 A process can be considered in a state of control even if one sample mean is 2.1 standard deviations above the
mean.
A) True
B) False
7 W. Edwards Deming
A) taught quality control techniques to Japanese
companies during the 1950's.
B) would have been very influential but for his very short life.
C) invented control charts and proposed the ISO 9000
standard.
D) suggested that most quality problems could be blamed
on labor.
8 Which is an appropriate step in continuous quality
improvement?
A) Taking measurements on a variable and keeping careful
records.
B) Posting quality banners or company flags where they
are visible to all.
C) Castigating the lazy employees for their shoddy