Term
___________ cause of variation are built into the process itself. |
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Definition
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Term
When similar parts are measured, _____________ predicts that the measurements will tend to cluster near the some value. |
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Definition
central tendency
special
stable |
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|
Term
A normal curve generally indicates that a process is __________. |
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Definition
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|
Term
__________ cause variation tends to distort the normal curve.
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|
Definition
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Term
The ________________ is the measure of the average distance a point is located from the average. |
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Definition
mass production
bad part
standard deviation |
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Term
A ___________ is a bar graph that shows the frequency distribution of a set of data. |
|
Definition
histogram
sigma
measurement |
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Term
The ____________ of a histogram should be constructed so that no data value ever falls upon them. |
|
Definition
mass boundaries
cell boundaries
data |
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Term
The height of a histogram bar shows the ___________ of a certain range of values. |
|
Definition
reference
values
frequency |
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Term
A histogram is usually made of a process when it is first started to determine if the process is __________. |
|
Definition
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|
Term
The peak of the histogram curve shows where the process is ___________. |
|
Definition
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|
Term
For product quality to fully benefit
from statistical process control, __________ must be collected and saved on a regular basis. |
|
Definition
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|
Term
The six steps necessary to create a histogram, with the exception of the last step, are the same steps used to create a(n) _________ chart. |
|
Definition
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|
Term
| USL stands for ________ specification limit. |
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Definition
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|
Term
Complete the following formula:
Approximate Cell Width= Range/ ______________ |
|
Definition
number of cells
number of rows
number of students
|
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Term
| Histograms are created by collecting _________ data. |
|
Definition
variable
frequenent
number |
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|
Term
The histogram is often made before putting a new process on-line to determine of the process is __________. |
|
Definition
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|
Term
The process _____________ is feature of the histogram that is natural to the process.
|
|
Definition
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|
Term
Upper and lower ________________ limits are often drawn on the histogram to show if the process of able to produce good parts. |
|
Definition
standards
samples
specification |
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|
Term
| If the histogram is off-centered, the machine needs to be ____________. |
|
Definition
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|
Term
A(n) ________________ will appear as a bell curve if the process has only common causes at work. |
|
Definition
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|
Term
A control chart uses a(n) __________ plot to show trends in a process. |
|
Definition
time-series
data plots
flow charts |
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|
Term
A control chart allows you to identify the types of ____________ in a process. |
|
Definition
variation
time circle
slope |
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|
Term
The basic function of a control chart is to ______________ the ongoing process. |
|
Definition
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|
Term
A(n) ____________ is more useful than a histogram because it shows the current status of the process. |
|
Definition
control chart
flow chart
plot |
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|
Term
| Two types of data are attribute and __________. |
|
Definition
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|
Term
If the process is stable, the distribution of the measurements will look something like a(n) __________________. |
|
Definition
hat-shaped curve
bell-shaped curve
slope |
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|
Term
The control limits are located at _________ standard deviations from the average value. |
|
Definition
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|
Term
The type of control chart
used for attribute data is a(n) _____________. |
|
Definition
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|
Term
The type of control chart often used for mass production runs of variable data is the _______________. |
|
Definition
X bar and R
M bar and B
R bar and X |
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|
Term
| A process should be left alone if its variation is within the _______________. |
|
Definition
control limits
time-series
records |
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|
Term
The ___________ shows the time when each data sample was taken. |
|
Definition
time scale
time-series
time plot |
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|
Term
The same steps are used, with the exception of the last step, to create a control chart that are used when creating a(n) _____________. |
|
Definition
record
histogram
flow chart |
|
|
Term
| LCL stands for _____________ reasonable limits. |
|
Definition
|
|
Term
| The Primary fields, LCL and UCL contain upper and lower control limits for the ____ chart. |
|
Definition
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|
Term
| The Secondary fields, LCL and UCL, cotain upper and lower control for the ____ chart. |
|
Definition
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|
Term
Nom is short for ________, which means that the part is within acceptable limits. |
|
Definition
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|
Term
When setting up a control chart, the process is definitely out of control if _______ or more points are outside the control limits. |
|
Definition
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|
Term
| When constructing a control chart, if one or two points are outside the control limits, you should throw out these points and ______________ the control limits. |
|
Definition
recalculate
finish
record |
|
|
Term
| The grand average of a control chart is also known as _____________. |
|
Definition
X-double bar
R-double bar
Q-double bar |
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|
Term
| The last step to follow when constructing a control chart from test run data is to determine if the averages are in __________ control. |
|
Definition
stastical
p chart
data plot |
|
|
Term
| When calculating the control limits for the ranges, the range should always be checked before the ___________. |
|
Definition
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|
Term
| A(n) ___________ pattern is a sign of a process out of statistical control due to a gradual change in process. |
|
Definition
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|
Term
| A group of points in on region of the chart is called a(n) __________ pattern. |
|
Definition
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|
Term
| The R Chart should always be analyzed before the____________ Chart. |
|
Definition
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|
Term
| A jump shift pattern is present whenever ______ or more points are located above and below the centerline. |
|
Definition
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|
Term
| A trend pattern where the range is decreasing could mean that the operator is becoming ___________. |
|
Definition
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|
Term
| The bell curve becomes distorted usually due to ________ causes. |
|
Definition
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