What is R?

R and Rstudio - What’s the difference?

Get R and Rstudio

• Download R at r-project.org
• Download Rstudio

Learning by doing: R and Rstudio

1. Open Rstudio and get familiar with the interface.
2. Create a new, empty R script.
3. What is the difference between the script editor and the console?
4. Copy the code below into the R script and run it line by line. Try to understand what each line does.

a <- 5
b <- 10

a + b

p <- a-b

v <- c(3,12,6,9,23)
v

v / b

mean(v)
# sum(v)

Questions:

• Why does p <- a-b not produce an output?
• What is c()?
• Why does # sum(v) not work?