What is the function of a control chart?

The function of a control chart is to monitor process variations over time and identify instability. Control charts are a key tool in quality control and process improvement, primarily used to visualize the performance of a process. They plot data points in time order, allowing quality engineers to see how a process behaves over time.

In a control chart, data collected from a process is plotted against predetermined control limits. These limits help identify whether a process is in a state of statistical control or if there are variations that signal potential issues. By monitoring these variations, organizations can determine if their processes are consistent and stable or if there are signals of trouble that require corrective action. This capability is crucial for maintaining quality standards and achieving continuous improvement in manufacturing and service processes.

In contrast, the other choices relate to different functions not associated with control charts. Setting pricing strategies involves market research and economic analysis, tracking employee attendance relates to human resource management, and organizing inventory deals with supply chain and logistics management. None of these aspects focus on monitoring and controlling process variations as effectively as control charts do.