StatInfoResults

class sherpa.fit.StatInfoResults(statname, statval, numpoints, model, dof, qval=None, rstat=None)

Bases: sherpa.utils.NoNewAttributesAfterInit

A summary of the current statistic value for one or more data sets.

name

str – The name of the data set, or sets.

ids

sequence of int or str – The data set ids (it may be a tuple or array) included in the results.

bkg_ids

sequence of int or str, or None – The background data set ids (it may be a tuple or array) included in the results, if any.

statname

str – The name of the statistic function.

statval

number – The statistic value.

numpoints

int – The number of bins used in the fits.

dof

int – The number of degrees of freedom in the fit (the number of bins minus the number of free parameters).

qval

number or None – The Q-value (probability) that one would observe the reduced statistic value, or a larger value, if the assumed model is true and the current model parameters are the true parameter values. This will be None if the value can not be calculated with the current statistic (e.g. the Cash statistic).

rstat

number of None – The reduced statistic value (the statval field divided by dof). This is not calculated for all statistics.

Methods Summary

format()

Return a string representation of the statistic.

Methods Documentation

format()

Return a string representation of the statistic.

Returns:txt – A multi-line representation of the statistic value or values. Return type:str