mqr.spc.ShewhartParams.
se#
- abstractmethod ShewhartParams.se(nobs)#
Calculates the standard error of samples with sizes 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
Magnitude of one standard deviation of the sampling distribution of this statistic for each sample size in nobs. Has the same index as the argument nobs.
Notes
This function calculates the standard deviation of the sampling distribution for the statistic that is being monitored. For example, in an XBar chart, se returns the standard deviation of the sampling distribution of the mean, ie. the standard error of the mean.