Quality Glossary Definition: Control chart. Also called: Shewhart chart, statistical process control chart. The control chart is a graph used to study how a process changes over time. Data are plotted in time …

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.

Jun 15, 2023 · The control chart is the voice of the process. Looking at data in a control chart tells you if your process – whatever you’re doing that generates the data – is stable or not.

A control chart is simply a run chart with confidence intervals calculated and drawn in. These “Statistical control limits” form the trip wires which enable us to determine when a process characteristic is …

Jun 19, 2025 · Control charts are used as a way to display the performance of a process over time. This is done by plotting the measured output data points on a chart, allowing those viewing them to track …

Oct 19, 2025 · What is a Control Chart? In manufacturing quality control, the Control Chart is one of the most powerful and visual tools used to monitor process variation over time.

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 …

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 …