Final answer:
Control charts are tools used to monitor and improve process performance by identifying unusual variations over time. They are particularly useful in manufacturing and other industries to monitor quality standards.
Step-by-step explanation:
Control charts are used to graphically display trends so that exceptions to quality standards can be identified. A control chart is a type of graph that is used to monitor, control, and improve process performance over time by studying variation and its sources. These charts enable businesses to identify unusual variations in processes, which could signify potential problems or areas where action may be necessary. While histograms show the distribution of data and are commonly used for large, continuous, quantitative data sets, control charts are specifically designed for trend analysis and monitoring over time. For example, in a manufacturing context, a control chart can help identify periods where the production process is not performing to the desired quality standards, indicating the need for intervention.