Visualizing and modeling relationships II

Lecture 11

Dr. Mine Çetinkaya-Rundel

Duke University
STA 113 - Fall 2023

Warm-up

Coming up

• HW 3 due Thursday

Today’s goals

• Recap modeling with a single predictor

• Fit and interpret models with multiple predictors

• Distinguish between additive and interaction models

Setup

library(tidyverse)
library(gt)

From last time

ae-09

• This application exercise was about predicting weights from heights of fish.
• Go to your container and switch to the ae-09 project in RStudio.
• Continue working on it starting with the Model summary section.

Visualizing and modeling with multiple predictors

ae-10

• Go to the course GitHub org and find your ae-10-more-fish (repo name will be suffixed with your GitHub name).
• Click on the green CODE button, select Use SSH (this might already be selected by default, and if it is, you’ll see the text Clone with SSH). Click on the clipboard icon to copy the repo URL.
• In RStudio, go to File ➛ New Project ➛Version Control ➛ Git.
• Copy and paste the URL of your assignment repo into the dialog box Repository URL. Again, please make sure to have SSH highlighted under Clone when you copy the address.
• Click Create Project, and the files from your GitHub repo will be displayed in the Files pane in RStudio.
• Click ae-10-more-fish.qmd to open the template Quarto file. This is where you will write up your code and narrative for the lab.