StatInfoResults

class sherpa.fit.StatInfoResults(statname, statval, numpoints, model, dof, qval=None, rstat=None)[source] [edit on github]

Bases: NoNewAttributesAfterInit

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

name

The name of the data set, or sets.

Type:: str

ids

The data set ids (it may be a tuple or array) included in the results.

Type:: sequence of int or str

bkg_ids

The background data set ids (it may be a tuple or array) included in the results, if any.

Type:: sequence of int or str, or None

statname

The name of the statistic function.

Type:: str

statval

The statistic value.

Type:: number

numpoints

The number of bins used in the fits.

Type:: int

dof

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

Type:: int

qval

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).

Type:: number or None

rstat

The reduced statistic value (the statval field divided by dof). This is not calculated for all statistics.

Type:: number or None

Methods Summary

format()

Return a string representation of the statistic.

Methods Documentation

format()[source] [edit on github]

Return a string representation of the statistic.

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