Programming Review

Working Environment and Programming Logic

Stat 251

2026-01-20

Homework 1

  • Almost everybody is done

  • Most difficulties with adding an image

  • Markdown code for image:

![Caption](path/to/image.jpg)
  • Make sure to add the image to your online repository: Add > Commit > Push

Working Environment

  • Know the 3 different ways to execute code from within RStudio

    • Terminal (Command Line)
    • Source Script (RStudio Button)
    • Interactive Mode (line by line)

  • Differentiate between the Console and the Terminal

  • Differentiate between R and Python in the Console

RStudio Projects

RStudio projects are a way to keep your work organized.

Let’s create one for this week’s class work.

Gif of creating an RStudio Project. Go to File -> New Project -> New Directory -> New Project. Fill in the directory name (stat251-week2) and decide if you would like to create a git repository (not necessary for this). Click Create Project. Notice that the file path is now set to the location of the project folder. If you put your files into this folder, you can reference those file names without using a complicated path.

Creating an RStudio Project

General Programming

Review: General Programming

Know how to:

  • Define a variable
  • Write a function
  • Write an if/else statement
  • load a package or import a library
  • Create a data table structure
  • Get a column, row, or value from a data table
  • Get an item from a list

Homework 2

  • Focus on the logic and thinking through the steps
  • Work with pencil and paper first