Control chart
Control chart (hereinafter, the Chart) is a quality-control tool that represents a graphic display of the results, over time and against established control limits, of a process. They are used to determine if the process is in control or in need of adjustment.
Definition
According to Juran's Quality Handbook by Defeo (7th edition),
- Control chart. A graphical tool used to determine if a process is in a state of (usually statistical) control over time. Most popular are Shewhart statistical process control charts.