distribution
fitting
The Glowing Python: Distribution fitting with scipy
https://glowingpython.blogspot.com/2012/07/distribution-fitting-with-scipy.html
#scipy
scipy.stats.norm
t-distribution
joepy: Characteristic Functions and scipy.stats
http://jpktd.blogspot.com/2012/12/characteristic-functions-and-scipystats.html
#scipy
$ \chi^2
(chi-square) distribution
Learn
$ \chi^2
(chi-square) distribution
https://nbviewer.jupyter.org/gist/tmiyama/5311742
#scipy
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