An optimum expanded model of control charts when there are several assignable causes
Engineering and Technology Journal,
1977, Volume 01, Issue 1, Pages 103-113
AbstractIn a previous work, the optimum design of X charts when there is a single assignable cause occurring randomly was studied. The present article extends the study to allow for the occurrence of several assignable causes. 14 independent variables are encountered in the model. The optimum values of the size and Frequency of sampling and the position of control limits are to be seeked.
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