SigmaPedia - The Free Online Lean Six Sigma Encyclopedia

English |  Español |  Français |  Português |  Deutsch |  中文

LCL

Go Back

Definition

The lower control limit shown on a statistical process control chart. Usually calculated as three Standard Deviations below the process mean. The standard deviation is either estimated using the average value of the range (R-Bar) and a table of Factors determined by sample size, or calculated directly from the subgroup data. See the entries on the specific control charts to find out how to calculate the LCL for those charts.

See Also

Control Limits
Statistical Process Control