Exercise

data.table pop quiz

Which of the following statements are true about data.tables?

A data.table is a data.frame. It inherits and builds on top of it.
data.tables can have columns of different lengths.
Columns of data.tables cannot be of data type list.
data.tables never use or need row names.

Instructions

50 XP

Possible Answers

1 and 3
1 and 4
2 and 3
2 and 4