May also want to take a look at: "Introduction to Statistics and Probability using R" https://cran.r-project.org/web/packages/IPSUR/vignettes/IPSUR.pdf https:/

May also want to take a look at: "Introduction to Statistics and Probability using R" https://cran.r-project.org/web/packages/IPSUR/vignettes/IPSUR.pdf https://cran.r-project.org/web/packages/IPSUR/vignettes/IPSU... R has builtin functions for most of your needs. You can get a lot done with very few code.