MGT 3332 - Chapter 10

The variation of a sampling distribution is less than the variation of the underlying process distribution

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Tolerances represent the control limits we use on the charts.

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Process capability compares variability to the tolerances.

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Processes that are in control eliminate variations

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A c-chart is used to monitor the total number of defectives in the output of a process.

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A control chart of any type answers the question, "is my process in control?"

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A process that exhibits random variability would be judged to be out of control

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Attribute data are counted, variable data are measured.

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Attributes need to be measured, whereas variable data can be counted.

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Concluding that a process is out of control when it is not know is a Type I error.

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Control limits used on process control charts are specifications established by design or customers.

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If a point on a control chart falls outside one of the control limits, this suggests that the process output is nonrandom and should be investigated.

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Process "capability" means the ability to produce at high throughout.

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A c-chart is used to monitor the number of defects per unit for process output.

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