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Statistical Quality Control
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Process Capability Analysis Using Histogram Probability Plot in Statistical Quality Control
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Cumulative control charts were first presented by..
1.
Cumulative control charts were first presented by ____________
A.
Shewhart
B.
ASQC
C.
ASQ
D.
Page
Answer» E.
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A change of process mean changes the value of Ci>Ci-1, so we can say that the process mean has shifted upwards.
Upward or downward shifts in the Cusum value, directly indicate changes in process condition.
If the value of xi=9.29, and Ci-1=-2.56, what will be the value of the cumulative sum for this sample, if the value of μ0=10?
Which of these is another form of the cumulative sum value plotted on the cumulative sum chart?
Which of these conditions don’t describe an assignable cause in the process?
A significant trend upwards in the process cumulative sum chart indicates ____________
How are the changes in the conditions of the process, known using the Cusum charts?
If the value of the cumulative sum shifts to a lower value what is likely to be the reason for it?
If the mean changes to a higher value, what will be the effect on the cumulative sum?
Cumulative control charts were first presented by ____________
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