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14 Test Questions73. The process capability index C p compares:A. The process mean to the process standard deviationB. The range of the specification limits to the process spreadC. The process spread to the control limitsD. The process spread to the range of specification limits74. The process suffered with a one standard deviation shift in its mean. How is theprocess capability index C p affected?A. C p increases.B. C p decreases.C. C p remains constant.D. C p doubles.75. How does the process capability index C pk compare to capability index C p ?A. C pk is always greater than C p .B. C pk is always equal to C p .C. C pk is always less than C p .D. C pk is always less than or equal to C p .76. If C pk = C p , what can be said about this process?A. The process is capable.B. The process is not capable.C. The process is out of control.D. The process is centered.77. If a centered process has an upward shift in the mean, how does the value of C pkchange?A. C pk does not change.B. C pk decreases.C. C pk increases.D. C pk is undetermined.78. A process is in control and follows a normal distribution with mean and standarddeviation equal to 64 and 2, respectively. Specification limits are 66 ± 6. Find thevalue of C pk .A. –1.0B. 0.67C. 1.0D. 0.33379. An example of an attribute chart is a(an):A. X – and R chartB. X – and S chart
Test Questions 15C. CUSUM chartD. p chart80. A process is well established. What is the appropriate variable control chart?A.B.X – and R chartX – and S chartC. Shewhart-CUSUMD. CUSUM chart81. A quality control engineer determines the number of nonconforming computerchips by taking samples of varying sizes. What is the appropriate control chart?A. X – and S chartB. c chartC. np chartD. p chart82. An operator noted that the last point on an X – chart is beyond the control limits andhe launches an investigation. What can be said about the process?A. The process output is out of spec.B. The process mean has a 3σ shift.C. A special cause of variation is likely affecting the process.D. The process variability has increased.83. The melting point of an alloy is known to be 300°C. A new gauge is used to takefive independent measurements of the melting point of the alloy. The results are302.05°C, 305°C, 306.08°C, 307.54°C, and 301.50°C. What can be said about the newgauge?A. The gauge is accurate but not precise.B. The gauge is precise but not accurate.C. The gauge is neither accurate nor precise.D. The gauge is both accurate and precise.84. A gauge is used to measure the freezing point of water. Five independentmeasurements of the freezing point of water are taken. The results are 0.05°C,–0.02°C, 0.03°C, –0.04°C, and 0.01°C. What can be said about the gauge?A. The gauge is accurate but not precise.B. The gauge is precise but not accurate.C. The gauge is neither accurate nor precise.D. The gauge is both accurate and precise.
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- Page 340 and 341: About the Authors 425preparation co
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- Page 348 and 349: 412 ReferencesChapter 7Bosch, J. A.
- Page 350 and 351: 414 ReferencesSimpson, J. A. 1981.
- Page 352 and 353: 416 ReferencesDeming, W. E. 1986. O
- Page 354 and 355: 418 ReferencesChapter 19Deleryd, M.
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- Page 385 and 386: Test Answer Key1. B28. C55. B82. C2
- Page 387 and 388: INDEXIndex TermsLinksAacceptance nu
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- Page 393 and 394: Index TermsLinksfinal inspection 16
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- Page 403 and 404: Index TermsLinksQQS-9000 standards
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- Page 409 and 410: Index TermsLinksvariance 208variati
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Test Questions 15
C. CUSUM chart
D. p chart
80. A process is well established. What is the appropriate variable control chart?
A.
B.
X – and R chart
X – and S chart
C. Shewhart-CUSUM
D. CUSUM chart
81. A quality control engineer determines the number of nonconforming computer
chips by taking samples of varying sizes. What is the appropriate control chart?
A. X – and S chart
B. c chart
C. np chart
D. p chart
82. An operator noted that the last point on an X – chart is beyond the control limits and
he launches an investigation. What can be said about the process?
A. The process output is out of spec.
B. The process mean has a 3σ shift.
C. A special cause of variation is likely affecting the process.
D. The process variability has increased.
83. The melting point of an alloy is known to be 300°C. A new gauge is used to take
five independent measurements of the melting point of the alloy. The results are
302.05°C, 305°C, 306.08°C, 307.54°C, and 301.50°C. What can be said about the new
gauge?
A. The gauge is accurate but not precise.
B. The gauge is precise but not accurate.
C. The gauge is neither accurate nor precise.
D. The gauge is both accurate and precise.
84. A gauge is used to measure the freezing point of water. Five independent
measurements of the freezing point of water are taken. The results are 0.05°C,
–0.02°C, 0.03°C, –0.04°C, and 0.01°C. What can be said about the gauge?
A. The gauge is accurate but not precise.
B. The gauge is precise but not accurate.
C. The gauge is neither accurate nor precise.
D. The gauge is both accurate and precise.
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