ISDS 3115 Test 2 MC
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Part five Goss-Sampson (2020), Statistical An... BA - Module 3 Outlier
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If a sample of items is taken and the mean of the sample a
is outside the control limits, the process is:
A) likely out of control and the cause should be
investigated.
B) in control, but not capable of producing within the
established control limits.
C) within the established control limits with only natural
causes of variation.
D) monitored closely to see if the next sample mean will
also fall outside the control limits.
E) producing high quality products.
The causes of variation in statistical process control are: d
A) cycles, trends, seasonality, and random variations.
B) producer's causes and consumer's causes.
C) mean and range.
D) natural causes and assignable causes.
E) Type I and Type II.
Natural variations: E) All of the above are true.
A) affect almost every production process.
B) are the many sources of variation that occur when a
process is under control.
C) when grouped, form a pattern, or distribution.
D) are tolerated, within limits, when a process is under
control.
E) All of the above are true.
,Natural variations: d
A) are variations that are to be identified and
investigated.
B) are variations that can be traced to a specific cause.
C) are the same as assignable variations.
D) lead to occasional false findings that processes are
out of control.
E) play no role in statistical process control.
Assignable variation: b
A) is a sign that a process is under control.
B) is to be identified and investigated.
C) is the same as random variation.
D) is variation that cannot be traced to a specific cause.
E) leads to a steep OC curve.
Control charts for variables are based on data that come c
from:
A) acceptance sampling.
B) individual items.
C) averages of small samples.
D) averages of large samples.
E) the entire lot.
The purpose of an x-bar chart is to determine whether c
there has been a:
A) change in the dispersion of the process output.
B) change in the percent defective in a sample.
C) change in the central tendency of the process output.
D) change in the number of defects in a sample.
E) change in the AOQ.
The number of defects after a hotel room cleaning d
(sheets not straight, smears on mirror, missed debris on
carpet, etc) should be measured using what type of
control chart?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) either x-bar chart or R chart
The number of late insurance claim payouts per 100 c
should be measured with what type of control chart?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) either p-chart or c-chart
, The upper and lower limits for diving ring diameters c
made by John's Swimming Co. are 40 and 39 cm.,
respectively. John took 11 samples with the following
average diameters (39, 39.1, 39.2, 39.3, 39.4, 39.5 39.6, 39.7,
39.8, 39.9, 40). Is the process in control?
A) Yes, no diameters exceeded the control limits.
B) No, some diameters exceeded the control limits.
C) No, there is a distinguishable pattern to the samples.
D) No, the range is not in control.
E) There is not enough information to make a decision.
Red Top Cab Company receives multiple complaints per a
day about driver behavior. Over 9 days the owner
recorded the number of calls to be 3, 0, 8, 9, 6, 7, 4, 9,
and 8. What is the upper control limit for the 3-sigma c-
chart?
A) 13.35
B) 8.45
C) 24.00
D) 0.00
E) 9.03
A process that is assumed to be in control with limits of e
89 ± 2 had sample averages for the x-bar chart of the
following: 87.1, 87, 87.2, 89, 90, 88.5, 89.5, and 88. Is the
process in control?
A) Yes.
B) No, one or more averages exceeded the limits.
C) Not enough information to tell.
D) No, there is a distinguishable trend.
E) No, two or more consecutive points are very near the
lower (or upper) limit.
Ten samples of a process measuring the number of d
returns per 100 receipts were taken for a local retail store.
The number of returns were 10, 9, 11, 7, 3, 12, 8, 4, 6, and 11.
Find the standard deviation of the sampling distribution
for the p-bar chart.
A) There is not enough information to answer the
question.
B) .081
C) 8.1
D) .0273
E) .0863
An x-bar control chart was examined and no data points e
fell outside of the limits. Can this process be considered
in control?
A) Not yet, there could be a pattern to the points.
B) Not yet, the R-chart must be checked.
C) Not yet, the number of samples must be known.
D) Yes.
E) Both A and B
Save
Students also studied
Part five Goss-Sampson (2020), Statistical An... BA - Module 3 Outlier
47 terms 27 terms 30 terms 8 terms
Antoinnette_Bouw2 Preview Franka585 Preview dulm333 Preview aay
If a sample of items is taken and the mean of the sample a
is outside the control limits, the process is:
A) likely out of control and the cause should be
investigated.
B) in control, but not capable of producing within the
established control limits.
C) within the established control limits with only natural
causes of variation.
D) monitored closely to see if the next sample mean will
also fall outside the control limits.
E) producing high quality products.
The causes of variation in statistical process control are: d
A) cycles, trends, seasonality, and random variations.
B) producer's causes and consumer's causes.
C) mean and range.
D) natural causes and assignable causes.
E) Type I and Type II.
Natural variations: E) All of the above are true.
A) affect almost every production process.
B) are the many sources of variation that occur when a
process is under control.
C) when grouped, form a pattern, or distribution.
D) are tolerated, within limits, when a process is under
control.
E) All of the above are true.
,Natural variations: d
A) are variations that are to be identified and
investigated.
B) are variations that can be traced to a specific cause.
C) are the same as assignable variations.
D) lead to occasional false findings that processes are
out of control.
E) play no role in statistical process control.
Assignable variation: b
A) is a sign that a process is under control.
B) is to be identified and investigated.
C) is the same as random variation.
D) is variation that cannot be traced to a specific cause.
E) leads to a steep OC curve.
Control charts for variables are based on data that come c
from:
A) acceptance sampling.
B) individual items.
C) averages of small samples.
D) averages of large samples.
E) the entire lot.
The purpose of an x-bar chart is to determine whether c
there has been a:
A) change in the dispersion of the process output.
B) change in the percent defective in a sample.
C) change in the central tendency of the process output.
D) change in the number of defects in a sample.
E) change in the AOQ.
The number of defects after a hotel room cleaning d
(sheets not straight, smears on mirror, missed debris on
carpet, etc) should be measured using what type of
control chart?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) either x-bar chart or R chart
The number of late insurance claim payouts per 100 c
should be measured with what type of control chart?
A) x-bar chart
B) R-chart
C) p-chart
D) c-chart
E) either p-chart or c-chart
, The upper and lower limits for diving ring diameters c
made by John's Swimming Co. are 40 and 39 cm.,
respectively. John took 11 samples with the following
average diameters (39, 39.1, 39.2, 39.3, 39.4, 39.5 39.6, 39.7,
39.8, 39.9, 40). Is the process in control?
A) Yes, no diameters exceeded the control limits.
B) No, some diameters exceeded the control limits.
C) No, there is a distinguishable pattern to the samples.
D) No, the range is not in control.
E) There is not enough information to make a decision.
Red Top Cab Company receives multiple complaints per a
day about driver behavior. Over 9 days the owner
recorded the number of calls to be 3, 0, 8, 9, 6, 7, 4, 9,
and 8. What is the upper control limit for the 3-sigma c-
chart?
A) 13.35
B) 8.45
C) 24.00
D) 0.00
E) 9.03
A process that is assumed to be in control with limits of e
89 ± 2 had sample averages for the x-bar chart of the
following: 87.1, 87, 87.2, 89, 90, 88.5, 89.5, and 88. Is the
process in control?
A) Yes.
B) No, one or more averages exceeded the limits.
C) Not enough information to tell.
D) No, there is a distinguishable trend.
E) No, two or more consecutive points are very near the
lower (or upper) limit.
Ten samples of a process measuring the number of d
returns per 100 receipts were taken for a local retail store.
The number of returns were 10, 9, 11, 7, 3, 12, 8, 4, 6, and 11.
Find the standard deviation of the sampling distribution
for the p-bar chart.
A) There is not enough information to answer the
question.
B) .081
C) 8.1
D) .0273
E) .0863
An x-bar control chart was examined and no data points e
fell outside of the limits. Can this process be considered
in control?
A) Not yet, there could be a pattern to the points.
B) Not yet, the R-chart must be checked.
C) Not yet, the number of samples must be known.
D) Yes.
E) Both A and B
