Lecture 2

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# Lecture 2
## An Introduction to R and RStudio
### JMG
### MATH 204
### Thursday, September 2

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# Learning Objectives

In this lecture, we will

- Introduce R and RStudio

- We will work in RStudio Cloud.
    - Get a feel for the RStudio IDE.
    - Learn the most basic relevant R commands.
    
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- Explore some actual data to reinforce the basic data concepts from last lecture.
    
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# Recall From Last Time

In the last lecture, we

- Went over course logistics, syllabus, textbook, use or R, etc.

- Discussed data and it's structure, e.g., data matrices and variable types.

- Covered sampling principles and strategies.

- Introduced relationship between variables.

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# RStudio Cloud

By now, you should have completed the following tasks:

- Carefully read the syllabus.

- Responded via email to my "getting to know you" prompt.

- Reviewed Chapter 1 of the Textbook.

- Registered for [RStudio Cloud](https://rstudio.cloud/).

- Accepted my invitation to the MATH204 RStudio Cloud Workspace.

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# Let's Go!

Follow me to [RStudio Cloud](https://rstudio.cloud/).

![](https://github.com/allisonhorst/stats-illustrations/blob/master/rstats-artwork/exploder.gif?raw=true)

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# Reflection

In this lecture, we

- introduced R, RStudio, and RStudio Cloud, 
- learned to use R for numerical calculations, 
- learned a little about working with data frames in R, 
- introduced R packages and the `openintro` package, and
- introduced [RMarkdown](https://rmarkdown.rstudio.com/) notebooks.

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# Before Next Class Meeting

Before the next class meeting, make sure that you have completed the following tasks:

- attempted the first two homework sets, 
- completed the first concept quiz and participation assignment, and
- watched the videos included in the next two slides.

Have a great rest of the day!

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# Summarizing Numerical Data

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# Exploring Categorical Data