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https://data-flair.training/blogs/r-vector/
https://r4ds.had.co.nz/index.html
https://bookdown.org/rdpeng/rprogdatascience/
https://cs109.github.io/2015/pages/videos.html
https://github.com/cs109/2015/tree/master/Lectures
http://topepo.github.io/caret/index.html
https://clauswilke.com/dataviz/
https://swcarpentry.github.io/r-novice-gapminder/
https://moderndive.com/index.html
https://archive.ics.uci.edu/ml/index.php
https://github.com/andrewgbruce/statistics-for-data-scientists
https://medipe.psu.ac.th/epicalc/
https://cran.r-project.org/web/packages/epiDisplay/index.html