Simple linear regression for public health: Setup

To get set up for this lesson, there are a few steps that you will need to follow, as explained below:

1. Install R and RStudio, or update these if you already have the programs installed.
2. Download the RStudio Project environment for this lesson.
3. Set up the packages used in this lesson using renv.

Installing or updating R and RStudio

If you do not have R and RStudio installed on your computer, follow the installation instructions here. If you have R and RStudio installed, please make sure that your computer is running the latest versions by following the instructions here.

Downloading the RStudio Project environment

To ensure that you have the data and packages used in this lesson, you can use a dedicated RStudio Project environment. Please follow the following steps:

1. Create a folder on your computer for the lesson, e.g. simple-linear-reg-lesson in your documents folder.
2. Download the environment as a zipped folder by left clicking here.
3. Unzip the downloaded folder into the simple-linear-reg-lesson folder.

Setting up the packages used in the lesson

To ensure that everyone is using the same versions of packages used in this lesson, as well as to avoid clashes with packages installed on your computer, the RStudio Project environment has a pre-defined package library using renv. To install the required packages, please follow the following steps:

1. Launch the RStudio Project by double-clicking on the workshop-project.RProj file in simple-linear-reg-lesson.
2. Allow renv to install the required packages locally by typing renv::restore() in the console.
3. When the prompt comes up, answer it with Y.
4. After installation has completed, load the required packages by typing source("scripts/load_packages.R") into the console.
5. You are now set up for the lesson!

Note: the lesson data should be in your Environment under the name dat. If you would like more information about the data, see the data page.