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A control chart is a graphical representation of process variables over time. Control charts are commonly used in the production process to determine whether there is a trend in a process that is moving beyond predetermined control limits. If so, action is taken to move the process back within the control limits. By monitoring processes in this manner, a business can minimize the likelihood that a process will create products that are out of specification. The result of this monitoring is that a business incurs fewer costs related to the scrapping of products or from having to deal with customer complaints regarding product failures.
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