The Control Chart is a graph used to study how a process changes over time with data plotted in time order. Learn about the 7 Basic Quality Tools at ASQ.

Control charts are graphical plots used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions.

Jan 28, 2025 · How do you know which control charts to use for an improvement project? Our guide can help you identify which works best for your needs.

A control chart displays process data by time, along with upper and lower control limits that delineate the expected range of variation for the process. These limits let you know when unusual variability occurs.

Jul 23, 2025 · A Control Chart is a graphical representation used to study how a process changes over time. It plots data points in the time order and helps detect trends or shifts in the process by …

Mar 7, 2024 · Control charts are graphical representations of process data over time. They show whether the manufacturing process is stable and operating within expected parameters through the …

Dec 1, 2025 · A Control Chart is a statistical tool used in quality control to monitor how a process changes over time. It helps determine whether a process is stable, predictable, and operating within …