How are the changes in the conditions of the process, known using the – McqOptions

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1.	How are the changes in the conditions of the process, known using the Cusum charts?
A.	By the change in Cusum value
B.	By the change in the sample standard deviation
C.	By plotting a s chart first
D.	By plotting an R chart first
Answer» B. By the change in the sample standard deviation

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