Master of Science
Wallace J. Richardson
This paper proposes a procedure for determining, through simulation, the multiple of sigma that should be used to maintain the current control of a process. This is done by minimizing the cost of the operation of the control chart program and any income loss which may accure from the interaction of the causal variables.
Graziano, Vincent J., "On the selection of control lines for x charts on an economic basis" (1965). Theses and Dissertations. 3374.