Shewhart control charts
A Shewhart control chart detects changes in a process.
Basic Shewhart control chart

Advanced Shewhart control chart with phases and stratification

- Shewhart variables control charts
Variables control charts plot quality characteristics that are numerical (for example, weight, the diameter of a bearing, or temperature of the furnace). - Shewhart attributes control charts
Attributes control charts plot quality characteristics that are not numerical (for example, the number of defective units, or the number of scratches on a painted panel). - Shewhart control chart rules
Tests for special-cause variation determine when a process needs further investigation.