Stat¶

class sherpa.stats.Stat(name)[source]¶

Bases: sherpa.utils.NoNewAttributesAfterInit

Methods Summary

`calc_stat`(data, model)	Return the statistic value for the data and model.
`calc_staterror`(data)	Return the statistic error values for the data.

Methods Documentation

calc_stat(data, model)[source]¶

Return the statistic value for the data and model.

Parameters:	data (a Data or DataSimulFit instance) – The data set, or sets, to use. model (a Model or SimulFitModel instance) – The model expression, or expressions. If a SimulFitModel is given then it must match the number of data sets in the data parameter.
Returns:	statval, fvec – The statistic value and the per-bin “statistic” value.
Return type:	number, array of numbers

calc_staterror(data)[source]¶

Return the statistic error values for the data.

Parameters:	data (scalar or 1D array of numbers) – The data values.
Returns:	staterror – The errors for the input data values (matches the data argument).
Return type:	scalar or array of numbers