Process Control with Lot Sizing
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One of the widely used statistical approaches to maintaining control of a process is the control chart. To use this tool, the designer must determine three parameters: the sample size to be taken from the output of the process, the control limits on the chart, and the number of units to be produced between samplings (the intersample interval). The general procedure is administered as follows: near the end of the intersample interval a number of units are taken from the output of the process; the sampled units are inspected; if the resulting information does not fit within the prescribed control limits, the process is stopped and investigated for the presence of an assignable source that may be altering the output of the process.
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