22 July — updated instructions — just four steps — in Mike’s Biostatistics Book for starting an R session and linking to Google Drive with Google Colaboratory (Google Colab) cloud service.
Here’s a qrcode with the url to start an R notebook.
qrcode generated with R package qrcode.
Mike’s Biostatistics Book, my open textbook I use to support my biostatistics course at Chaminade University, was adopted (September 2024) by the folks at LibreTexts and is now available as part of their open educational resource library in the Applied Statistics. The link is https://stats.libretexts.org/Bookshelves/Applied_Statistics/Mike%E2%80%99s_Biostatistics_Book_(Dohm)
The primary version of Mike’s Biostatistics Book will remain here at my letgen.org website, but the LibreTexts version will also be maintained, and may well be a more attractive vehicle for others to use, or if instructors, even adopt for their courses. Future plans include moving homework and related tutorial resources, which are primarily the purpose of my companion site, Mike’s Workbook for Biostatistics, to the LibreText open homework system.
Because of the copy right license under which I’ve released my textbook, end users are also free to correct typos, any content errors, or even edit the text to suit their own needs, provided that that my name remains attached to the text.
Wikipedia has a nice summary about LibreTexts.A nice writeup about Open Access textbooks and LibreTexts by E. Wexler (2017) is available at EdSurge.
I’ve been teaching a biostatistics class since 2003, first at UH-Hilo, and at Chaminade University since 2010. I’ve tried a number of textbooks, but in the last couple of years have elected to go with my own notes. I’m now releasing the ePub into the wild as Mike’s Biostatistics Book.
30-Sep-2020: 11 of 20 chapters posted
Example, use command line program get-filehash in Windows 10, or the terminal and command md5 in macOS, or call a function from the opensslR program to compare hashsum of R download file, e.g., R-3.6.1-win.exe, against fingerprint.
Open PowerShell (type “powershell” in search)
Enter on one line
get-filehash -Algorithm MD5
Navigate to folder (or note file path) which contains the file to check, highlight the file, then drag and drop to add to the command
get-filehash -Algorithm MD5C:\Users\userName\Downloads\R-3.6.1-win.exe
get-filehash uses the Sha256 algorithm by default (Microsoft).
replace userName with your user account
Open terminal (type “terminal” in Spotlight)
Enter on one line “md5” plus a space
md5
Navigate to folder (or note file path) which contains the file to check, highlight the file, then drag and drop to add to the command
md5 /Users/userName/Downloads/R-3.6.1.pkg
Alternatively, replace md5 with the better sha256
Open R, install package openssl, and follow examples provided at https://cran.r-project.org/web/packages/openssl/vignettes/crypto_hashing.html