Variable control chart
Authored by Trâm Anh
Mathematics
University
Used 16+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
For any process, the sample ranges are, 1.2,1.5,1.1,1.4,1.5. The subgroup size is 5. What will be the process standard deviation? Given: d2=2.326 and A2=0.577
0.576
2.322
0.511
2.463
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The natural variability of the process is measured by ____
Process mean
Sample standard deviation
Process standard deviation
Sample mean
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Natural variations are the many sources of variation within a process that
are not perfect.
have several assignable causes of variation.
are out of control.
are in statistical control.
none of the above
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using the terminology of statistical control, the variation within a stable system
is random variation
results from common causes.
is predictable within a range.
a and b.
all of the above.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using the terminology of statistical control, the variation outside the control limits on an X-bar or range chart
is viewed as uncontrollable.
is assumed to have been caused by special or assignable causes.
indicates that the system is probably out of control.
indicates that the system is out of control by special causes
all of the above.
6.
FILL IN THE BLANKS QUESTION
10 mins • 1 pt
Calculate CL of X chart? (1 decimal, ex: 5.2 or 8.9)
(a)
7.
FILL IN THE BLANKS QUESTION
10 mins • 1 pt
Calculate X chart:
UCL = ? ( 2 decimal, ex: 20.91 or 57.92)
(a)
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