Statistics notes  Footnotes on various analyses
From Helpful
This is more for overview (my own) than for teaching or exercise.
For some more indepth material to study, see e.g. the http://www.khanacademy.org/
Other data analysis, data summarization, learning

This article/section is a stub — probably a pile of halfsorted notes, is not wellchecked so may have incorrect bits. (Feel free to ignore, fix, or tell me) 
Contents
Sample versus population
what about this 1 business
Data properties
Multicollinearity
Standard deviation, variance
Standard deviation of a lot of data
Covariance, correlation
noise crossterms
crosscorrelation
autocorrelation
relation to convolution
see also