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Out of control process using Control Chart

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When using a control chart, what are some patterns that would indicate that the process is out of control?

Also explain what might cause a process to be out of control?

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Solution Summary

In case of using a control chart, there are several patterns that indicate possible out of control condition in the process. How to spot these patterns and what might cause a process to be out of control is explained in this response.

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Patterns of Out of Control Process
In case of using a control chart, there are several patterns that indicate possible out of control condition in the process. A control chart may indicate an out of control condition when a sequence of points shows nonrandom behavior. It is because it reflects that the process is not following a normal pattern of variation and that is the signal of out of control process. It means if the plotted points follow a pattern of variation that not consistent with the area under the normal curve then the process would be out of control (May, 2006).
Along with this, the plotting of points beyond the limits of control chart is also a pattern of an out of control condition. It is because ...

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