mqr.spc.ShewhartParams.

lcl

abstractmethod ShewhartParams.lcl(nobs)

Calculates the lower control limits for samples with sizes in nobs.

Parameters:

nobspandas.Series

Sample sizes used to construct the statistic that will be monitored with this limit. The index must match the index of the samples argument passed to ControlParams.statistic.

Returns:

pandas.Series

Lower limits for each sample. Has the same index as the argument nobs.