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Process Capability Analysis Using Histogram Probability Plot in Statistical Quality Control
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Upward or downward shifts in the Cusum value, dir..
1.
Upward or downward shifts in the Cusum value, directly indicate changes in process condition.
A.
True
B.
False
Answer» B. False
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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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