Python / numpy / statistics> difference> standard deviation> population / sample> unbiased English notation

Operating environment


Xeon E5-2620 v4 (8 cores) x 2
32GB RAM
CentOS 6.8 (64bit)
openmpi-1.8.x86_64 and its-devel
mpich.x86_64 3.1-5.el6 and its-devel
gcc version 4.4.7 (And gfortran)
NCAR Command Language Version 6.3.0
WRF v3.7.Use 1.

The links I was interested in while implementing the standard deviation.

Standard deviation in numpy [duplicate] @ Stackoverflow

user1700890 Dec 2 '15 at 19:07 I think default of numpy is population standard deviation, which is N and sample standard deviation is N-1.

It seems that there is a difference between unbiased variance and "other (unknown) variance".

http://d.hatena.ne.jp/Rion778/20110217/1297935974

EXCEL> Functions> STDEV> Unbiased variance

~~ Someone's article mentioned unbiased distribution in the comment section, but I can't find which article it was. ~~ found. Relationship between mathematical formulas and programming

https://ja.wikipedia.org/wiki/%E6%A8%99%E6%BA%96%E5%81%8F%E5%B7%AE

Population variance / sample variance / unbiased variance

https://stat.biopapyrus.net/statistic/var.html

There seems to be the following terms.

--Mother dispersion --Sample variance --Unbiased dispersion

population variance / sample variance / unbiased variance There seems to be.

Also keep in mind the "name confusion" on wikipedia.

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