As John Chambers, the creator of R once said: to understand computations in R, two slogans are helpful:
- Everything that exists is an object.
- Everything that happens is a function call.
Learn by the book:
Statistics and Computing, Peter Salgaard, 2002, Springer, first Edition
http://www.academia.dk/BiologiskAntropologi/Epidemiologi/PDF/Introductory_Statistics_with_R__2nd_ed.pdf
http://publicifsv.sund.ku.dk/~pd/ISwR-answers.pdf
Learn Online:
EDX: HarvardX: PH525.1x Statistics and R
R statistical online learning references:
https://www.tutorialspoint.com/r/r_chi_square_tests.htm
http://www.r-tutor.com/
advanced: http://adv-r.had.co.nz/
Source:
https://www.r-project.org/
https://cran.r-project.org/doc/contrib/Short-refcard.pdf
http://ugrad.stat.ubc.ca/R/doc/html/index.html
More:
https://en.wikipedia.org/wiki/Probability_distribution
https://en.wikipedia.org/wiki/Exponential_family
https://www.google.pt/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwj_7d67ifHVAhVIzRQKHY7PA0EQFggoMAA&url=https%3A%2F%2Fwww.jstatsoft.org%2Farticle%2Fview%2Fv040i01%2Fv40i01.pdf&usg=AFQjCNHd-jbD4CmKgO9TS_CuwNMa0h7Dtw
http://andrewgelman.com/
http://blog.revolutionanalytics.com/
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