Understanding the World through Data
Question 1
Which of the following best describes the distinction between R and RStudio?
( ) They’re synonyms for the same thing. (X) R is the language; RStudio is the tool we’ll use to write and run R code. ( ) RStudio is the newer edition of the R language. ( ) R is a language of statistical computing; RStudio runs Excel.
Question 2
How do you save the output of an R command into your Environment?
( ) Wrap the command in parentheses ()
. ( ) Wrap the commend in curly braces {}
. (X) Use the assignment arrow and provide a name for the output. ( ) Drag and drop the command into your environment.
Question 3
The atomic building block of the R language is the …
- vector ( ) variable ( ) numeric ( ) factor ( ) data frame
Question 4
What type of vector can be used to best represent ordinal and nominal categorical variables?
( ) the variable ( ) numeric ( ) continuous ( ) discrete (X) factor