Exercise

# Vector Attributes

Which of the following statements is **incorrect**?

Instructions

**50 XP**

##### Possible Answers

- Like SAS, SPSS and Stata, variables in R have a type, but in R it is called "mode".
- Unlike SAS, SPSS and Stata, vectors in R have a class.
- Like in SAS, the length of a vector in R is the number of elements it contains, including missing values.