Ticket #745 (closed enhancement: fixed)
Opened 20121005T12:18:3105:00
Last modified 20121109T12:34:2106:00
Show AIC as well as chisquare
Reported by:  aivar  Owned by:  aivar 

Priority:  major  Milestone: 

Component:  slimplugin  Severity:  serious 
Keywords:  Cc:  payoung2@…  
Blocked By:  Blocking: 
Description
When choosing between single, double, and triple exponential models the Akaike index is a better criteria to determine which model fits best than just the chi square.
Calculate & show the AIC as well as the current chi square in the fit results.
Change History
comment:1 Changed 20121109T12:34:2106:00 by aivar
 Status changed from new to closed
 Resolution set to fixed
Fixed, may need tweaking.
I am using the formula:
AIC = chisquare + 2k
from http://en.wikipedia.org/wiki/Akaike_information_criterion
here k is the number of free parameters.
Usually the reduced chisquare gets reported, this is:
chisquare / n  k
here n is the number of data points and k the number of free parameters.