TA的首页CQE考试样题
The questions are reproduced from the ASQ website(Answers are on bottom of page)
1. Perfectionism in project management is LEAST likely to result in excess
Appraisal costs
prevention costs
internal failure costs
external failure costs
Which three of the following are considered key elements of Deming’s quality improvement strategy?
I.
An organization’s overall quality is in the hands of the organization’s management.
II.
The establishment of clear performance goals is required for effective improvement efforts.
III.
Quality problems are almost always a result of suboptimal systems, not the people operating in them.
IV.
Understanding variation and the use of statistical quality control methods is the primary tool to improve processes and systems.
I, II, and III
I, II, and IV
I, III, and IV
II, III, and IV
Which of the following tools are appropriate for a quality engineer to use in qualifying a process that has variable data?
I.
x and R control chart
II.
Histogram
III.
c chart
IV.
p chart
I and II only
II and III only
III and IV only
I, II, and IV only
A process is stable at a 1.5 percent nonconformity rate where the plant produces 200,000 units per month. The final inspection captures 1 out of every 10 nonconformities with only 1 out of every 25 nonconformities returned for warranty response. If the average cost for each detected nonconformity is $50/unit, what is the cost of quality?
$20,400
$21,000
$150,500
$204,000
Which of the following costs decreases most dramatically as nonconformities approach zero?
Prevention
Appraisal
Manufacturing
External failure
cost of manufacturing
cost of field maintenance
performance at acceptable levels
customer demand for the product
A major drawback of using histograms in process control is that they
do not readily account for the factor of time
are relatively difficult to construct and interpret
require too many data points
require too many intervals
A sequential operation can best be depicted graphically by means of
a histogram
a scatter diagram
a flow diagram
an interrelationship digraph
Two variables, x and y, are related in that x increases or decreases with y. Which of the following could best be used to depict this relationship?
A control chart
A pareto chart
A scatter diagram
An interrelationship digraph
A quality information system is best defined as a
historical collection of process and product data used to produce customer- or government-required reports on quality
set of systematic management reports that cover product and process functions and usually include summary information on warranty frequency and the cost of quality
method of collecting, storing, analyzing, and summarizing quality data to assist in decision-making
data collection and reporting system that tracks key product and process indicators of quality
The correlation coefficient for the length and weight of units made by a process is determined to be 0.27. If the process were adjusted to reduce the weight of each unit by 0.5 ounce, the correlation coefficient of the length and weight of the units made by the new process would be equal to
0.50
0.27
0.23
-0.23
A manufacturer of air conditioners wants to estimate the mean life (years from installation to replacement) of its units. The error level is set at 0.5 year, a desired probability (1 -) of 95 percent is selected, and the standard deviation of unit life is given as 6.0 years. If unit life is normally distributed, then the required sample size for the desired estimate is equal to
283
291
554
585
Alternative
Result
A
B
Total
X
I
II
80
Y
III
IV
120
Total
130
70
200
The correct value for the expected frequency of cell I in the contingency table shown above is
28
42
52
78
For questions 14-16 refer to the following information.
Management has asked a team of quality engineers to evaluate a sister company’s quality system in order to qualify the sister company to manufacture a critical component that has three characteristics that must be controlled. The characteristics are process temperature, 195 ± 5°F; component mass, 100 grams ± 7 grams; and chemical component, 3 percent or less.
A technical report submitted by the sister company stated that all of the characteristics complied with the company’s specifications. During review of the quality system, it was determined that the sister company does not have calibration procedures, only one mass measurement per component is performed per shift, and the analytical equipment for testing chemical accuracy does not work.
The team decided to measure 30 random samples from multiple shifts and to compare those measurements with 30 random samples taken from the sister company’s historical files. The data are summarized in the table below. Based on this evaluation, the quality engineers concluded that the sister company should not be used.
Temperature (°F)
Mass (grams)
Chemical Analysis
New
Historical
New
Historical
New
Historical
Mean
194.4
195.0
98.3
100.0
2.62%
None
Standard Deviation (n-1)
3.58
0.9
4.13
2.37
0.29%
None
Range
188-202
193-197
91-107
95-105
2.0%-3.0%
None
n
30
30
30
30
30
Equality of the new and historical mean values can be tested most appropriately by using which of the following tests?
Grubbs
t-test
Chi-square
Dixon
Based on the assumption that the temperature samples were taken from the same population, the null hypothesis that there is no significant difference between means is tested at the 5 percent level of significance. Which of the following gives the calculated z-statistic and the appropriate decision regarding acceptance or rejection of the null hypothesis?
-0.89; accept
-0.89; reject
0.67; accept
0.67; reject
A sample size of 30 individual values for each of the three characteristics (temperature, mass, and chemical analysis) allows the
use of the Dodge-Romig sampling plans
use of an approximation to a Gaussian distribution
use of the Bernoulli Process Theorem
calculation of Pearson’s coefficient of skewness
x and R have been computed for a series of control chart sample subgroups. Which of the following expressions would be used to calculate the spread of the individual units drawn from the production stream?
a. x + A3s
b. x +A2R
c. x + 3R/d2
d. x +R/d2
Of the following, the best way to prevent batches of material from becoming mixed or misplaced is to establish
operator check sheets
a material review board
statistical process control
material and status control
The formal, documented, comprehensive, and systematic examination of a design that ensures requirements are met, identifies problems, and proposes solutions is known as a
quality review
design review
design examination
failure mode, effect, and criticality analysis
A manufacturing control characteristic has a tighter tolerance than the product requirement. Such a tolerance would be classified as
nonfunctional
end-use
critical
major
To determine the average number of nonconforming parts over time, which of the following attribute control charts would be most appropriate?
c chart
u chart
p chart
np chart
A reference measurement is required to determine gage
accuracy
linearity
stability
repeatability
The variation in the average of the measurements made by different operators using the same gage when measuring a characteristic on one part is known as gage
linearity
accuracy
repeatability
reproducibility
Which of the following analyses is most often used to study the potential failures in a system?
Failure analysis
Fault tree analysis
Reliability allocation analysis
Pareto analysis
Answers:
1. Perfectionism in project management is LEAST likely to result in excess
Appraisal costs
prevention costs
internal failure costs
external failure costs
Which three of the following are considered key elements of Deming’s quality improvement strategy?
I.
An organization’s overall quality is in the hands of the organization’s management.
II.
The establishment of clear performance goals is required for effective improvement efforts.
III.
Quality problems are almost always a result of suboptimal systems, not the people operating in them.
IV.
Understanding variation and the use of statistical quality control methods is the primary tool to improve processes and systems.
I, II, and III
I, II, and IV
I, III, and IV
II, III, and IV
Which of the following tools are appropriate for a quality engineer to use in qualifying a process that has variable data?
I.
x and R control chart
II.
Histogram
III.
c chart
IV.
p chart
I and II only
II and III only
III and IV only
I, II, and IV only
A process is stable at a 1.5 percent nonconformity rate where the plant produces 200,000 units per month. The final inspection captures 1 out of every 10 nonconformities with only 1 out of every 25 nonconformities returned for warranty response. If the average cost for each detected nonconformity is $50/unit, what is the cost of quality?
$20,400
$21,000
$150,500
$204,000
Which of the following costs decreases most dramatically as nonconformities approach zero?
Prevention
Appraisal
Manufacturing
External failure
- Design reviews are used to analyze all of the following EXCEPT
cost of manufacturing
cost of field maintenance
performance at acceptable levels
customer demand for the product
A major drawback of using histograms in process control is that they
do not readily account for the factor of time
are relatively difficult to construct and interpret
require too many data points
require too many intervals
A sequential operation can best be depicted graphically by means of
a histogram
a scatter diagram
a flow diagram
an interrelationship digraph
Two variables, x and y, are related in that x increases or decreases with y. Which of the following could best be used to depict this relationship?
A control chart
A pareto chart
A scatter diagram
An interrelationship digraph
A quality information system is best defined as a
historical collection of process and product data used to produce customer- or government-required reports on quality
set of systematic management reports that cover product and process functions and usually include summary information on warranty frequency and the cost of quality
method of collecting, storing, analyzing, and summarizing quality data to assist in decision-making
data collection and reporting system that tracks key product and process indicators of quality
The correlation coefficient for the length and weight of units made by a process is determined to be 0.27. If the process were adjusted to reduce the weight of each unit by 0.5 ounce, the correlation coefficient of the length and weight of the units made by the new process would be equal to
0.50
0.27
0.23
-0.23
A manufacturer of air conditioners wants to estimate the mean life (years from installation to replacement) of its units. The error level is set at 0.5 year, a desired probability (1 -) of 95 percent is selected, and the standard deviation of unit life is given as 6.0 years. If unit life is normally distributed, then the required sample size for the desired estimate is equal to
283
291
554
585
Alternative
Result
A
B
Total
X
I
II
80
Y
III
IV
120
Total
130
70
200
The correct value for the expected frequency of cell I in the contingency table shown above is
28
42
52
78
For questions 14-16 refer to the following information.
Management has asked a team of quality engineers to evaluate a sister company’s quality system in order to qualify the sister company to manufacture a critical component that has three characteristics that must be controlled. The characteristics are process temperature, 195 ± 5°F; component mass, 100 grams ± 7 grams; and chemical component, 3 percent or less.
A technical report submitted by the sister company stated that all of the characteristics complied with the company’s specifications. During review of the quality system, it was determined that the sister company does not have calibration procedures, only one mass measurement per component is performed per shift, and the analytical equipment for testing chemical accuracy does not work.
The team decided to measure 30 random samples from multiple shifts and to compare those measurements with 30 random samples taken from the sister company’s historical files. The data are summarized in the table below. Based on this evaluation, the quality engineers concluded that the sister company should not be used.
Temperature (°F)
Mass (grams)
Chemical Analysis
New
Historical
New
Historical
New
Historical
Mean
194.4
195.0
98.3
100.0
2.62%
None
Standard Deviation (n-1)
3.58
0.9
4.13
2.37
0.29%
None
Range
188-202
193-197
91-107
95-105
2.0%-3.0%
None
n
30
30
30
30
30
Equality of the new and historical mean values can be tested most appropriately by using which of the following tests?
Grubbs
t-test
Chi-square
Dixon
Based on the assumption that the temperature samples were taken from the same population, the null hypothesis that there is no significant difference between means is tested at the 5 percent level of significance. Which of the following gives the calculated z-statistic and the appropriate decision regarding acceptance or rejection of the null hypothesis?
-0.89; accept
-0.89; reject
0.67; accept
0.67; reject
A sample size of 30 individual values for each of the three characteristics (temperature, mass, and chemical analysis) allows the
use of the Dodge-Romig sampling plans
use of an approximation to a Gaussian distribution
use of the Bernoulli Process Theorem
calculation of Pearson’s coefficient of skewness
x and R have been computed for a series of control chart sample subgroups. Which of the following expressions would be used to calculate the spread of the individual units drawn from the production stream?
a. x + A3s
b. x +A2R
c. x + 3R/d2
d. x +R/d2
Of the following, the best way to prevent batches of material from becoming mixed or misplaced is to establish
operator check sheets
a material review board
statistical process control
material and status control
The formal, documented, comprehensive, and systematic examination of a design that ensures requirements are met, identifies problems, and proposes solutions is known as a
quality review
design review
design examination
failure mode, effect, and criticality analysis
A manufacturing control characteristic has a tighter tolerance than the product requirement. Such a tolerance would be classified as
nonfunctional
end-use
critical
major
To determine the average number of nonconforming parts over time, which of the following attribute control charts would be most appropriate?
c chart
u chart
p chart
np chart
A reference measurement is required to determine gage
accuracy
linearity
stability
repeatability
The variation in the average of the measurements made by different operators using the same gage when measuring a characteristic on one part is known as gage
linearity
accuracy
repeatability
reproducibility
Which of the following analyses is most often used to study the potential failures in a system?
Failure analysis
Fault tree analysis
Reliability allocation analysis
Pareto analysis
Answers:
- d
- a
- c
- b
- c
- c
- b
- a
- a
- c
- a
- d
- a
- c
- b
- a
- d
- b
- c
- d
- d
- c
- d
- b
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