Statistics notes - Footnotes on various analyses

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This is more for overview (my own) than for teaching or exercise.

For some more in-depth material to study, see e.g. the

Math on data:

some introduction · areas of statistics
types of data · on random variables, distributions
Virtues and shortcomings of...
on sampling · probability
glossary · references, unsorted
Footnotes on various analyses

Other data analysis, data summarization, learning

This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)

Sample versus population

what about this -1 business

Data properties


Standard deviation, variance

Standard deviation of a lot of data

Covariance, correlation

noise cross-terms



relation to convolution

see also