Hi,
I want to calculate reduced chi square for some cosmological model using Planck TT and low l 2015 data.
Can anyone tell me what should be the no. of data points for that?
Thanks and regards,
Archita
Calculating reduced chi square

 Posts: 4
 Joined: August 02 2017
 Affiliation: Indian Statistical Institute Kolkata

 Posts: 1544
 Joined: September 23 2004
 Affiliation: University of Sussex
 Contact:
Re: Calculating reduced chi square
You could just count the number C_L multipoles used. However the log likelihoods are not all normalized in a way that makes calculating a directly comparable chi2 possible (the lowTEB likelihood is not based on C_L).

 Posts: 4
 Joined: August 02 2017
 Affiliation: Indian Statistical Institute Kolkata
Re: Calculating reduced chi square
Thanks Antony!