Data Structures: Exercises

Data structures

Examine this object:

obj

[[1]]
[1] 3 5 1

[[2]]
[1] "a"

1. What kind of data structure is obj?
   • Data frame
   • Vector
   • List
   • Matrix

Solution

• Data frame
• Vector
• List
• Matrix

2. And what types of vectors are included?
   • Numeric and character.
   • Character and logical.
   • Only numeric.
   • Only character.

Solution

• Numeric and character.
• Character and logical.
• Only numeric.
• Only character.