Quarto + R Intro
Lecture 2
Dr. Elijah Meyer
Duke University
STA 199 - Fall 2023
2023-08-31
Checklist
– Are you on Slack?
– Have you reserved a Duke 198/199 container?
– Have you accepted your GitHub organization invite?
– You can find ae-01 here! We will clone it together as a class
– Chat with TA before or after class / if you are not in Slack or the GitHub org
Announcements
– AE grading (Drop/Add ends - Sep-8th)
– If you are sick and need to request a recording, please do so after lecture is completed
– Lab-0
Warm Up 1: Types of Variables
– Height
– Weight
– Zip Code
– Coffee Drinker
Warm Up 1: Types of Variables
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Warm Up 2: Variables
– Explanatory Variable
– Response Variable
Warm Up 2: Variables
From the text: When we suspect one variable might causally; predict; influence change in another we label the first variable the explanatory variable and the second the response variable
Warm Up 3: Types of Studies
– Observational Study
– Experiment
Warm Up 3: Types of Studies
Researchers perform an observational study when they collect data in a way that does not directly interfere with how the data arise.
In an experiment, we often manipulate; control; fix; administer the explanatory variable.
Clone ae-01
– This is a similar process to how you will start off each class period
– Next Tuesday, AEs will be in the STA199-f23-1 GitHub organization
Goals for today
Basics we will use throughout the semester
- R and RStudio
- Quarto Documents
- Practice
What is R and RStudio?
– R is a statistical programming language
– RStudio is a convenient interface for R
Some R essentials
– Functions are (normally) verbs, followed by what they will be applied to in parentheses:
R essentials
– Packages are installed with the install.packages function and loaded with the library function, once per session:
Packages
library(tidyverse)
Packages
library(tidyverse)
tidyverse
– The tidyverse is a collection of R packages designed for data science.
– All packages share an underlying philosophy and a common grammar.
GitHub: Version control
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GitHub Commands: Pull Commit Push
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GitHub Commands: Pull Commit Push
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GitHub Commands: Pull Commit Push
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Quarto
– an open-source scientific and technical publishing system
– publish high-quality articles, reports, presentations, websites, blogs, and books in HTML, PDF, MS Word, ePub, and more
– Code goes in chunks, defined by three backticks, narrative goes outside of chunks
How will we use Quarto?
– Every assignment / lab / project will be given to you as a Quarto document
– You will always have a Quarto template document to start with
– As we get more familiar with R, the more code you will construct on your own
Wrap up
– What is version control? Why is it important?
– What is R vs RStudio?
– What is Quarto?
