LCL
Quality
LCL (Lower Control Limit)
Lower Control Limit
Statistically calculated lower boundary on a control chart representing expected common-cause variation.
Examples
- 01The LCL on the fill-weight chart is 498.6 g, calculated from the last 30 subgroups.
- 02The team reviews the LCL after the new filling head is installed because the process average has changed.
- 03When a point falls below the LCL, the operator checks the dosing nozzle for blockage before continuing.