Other useful materials
The tutorial 'R by example' is provided by Ajay Shah, as evident from the URL mayin.org/ajayshah. This personal website appears to be a knowledge base (KB) maintained by Ajay Shah, who likely has expertise in R programming and is sharing his knowledge through this tutorial.
The tutorial focuses on R, a powerful programming language and environment for statistical computing and graphics. It aims to teach R through practical examples, as suggested by the title 'R by example'. This approach allows learners to understand R's applications in real-world scenarios, making it easier to grasp and apply the concepts.