What is the primary use of a control chart in quality management?

The primary use of a control chart in quality management is to monitor process consistency over time. Control charts are essential tools in statistical process control, allowing organizations to visualize data over a period and identify trends, variations, and potential issues within a process. By plotting data points against control limits, users can assess whether the process is stable and predictable or if there are signs of variation that may indicate problems needing attention.

The ability to effectively track and analyze performance data helps organizations maintain quality standards, thereby ensuring that processes remain within desirable limits. This ongoing oversight allows for timely interventions and adjustments to improve efficiency and quality.

In contrast, the other options do not align with the primary function of a control chart. Market research is focused on understanding customer behavior and preferences, while developing marketing campaigns involves promotional strategies that are not related to process monitoring. Assessing customer satisfaction is centered on evaluating customer feedback and experiences, which is outside the scope of what control charts are designed to accomplish in quality management.