First Class Flashcards
1
Q
What is the first thing you should do every time you use R studio?
A
Set the working directory
2
Q
How do you set the working directory?
A
Session -> Set working directory -> choose file
3
Q
What is the function you use to install a package?
A
install.packages
4
Q
What is the function you use to load and attach a package?
A
library
5
Q
When are data considered to be “tidy”?
A
when every row in the data frame corresponds to a single observation and every variable is only found in one collumn
6
Q
How to access a built in help file?
A
use the question mark
7
Q
How do you get a collumn?
A
use the select function - select(name of date, name of collumn)
8
Q
How do you get a row?
A
use the slice function
9
Q
What must you first do when using all dplyr and ggplot functions?
A
provide the name of the dataframe
