Building Blocks

Question 1

Functions argument?

Answer 1

What we pass in the parentheses after the function name

Question 2

What do you use functions to create?

Answer 2

Objects (object < - Function ()

Question 3

What are Vector attributes?

Answer 3

Names, dimension and classes

Question 4

Indexing and slicing is used for?

Answer 4

Selecting values from a vector

Question 5

What can you used indexing & slicing for?

Answer 5

Adding a new variable, Editing variables and slicing & indexing Matrices & data frames

Question 6

How do you select a value from an object?

Answer 6

vector.name[n]

Question 7

What is the command for slicing?

Answer 7

Vector.name[n1 : nk]

Question 8

Why are classes important?

Answer 8

Gives R the base information needed to create an object…all object of a class share features

Question 9

What is recycling?

Answer 9

Repeating values in order to reach the necessary vector length to complete an operation

Question 10

When indexing a matrix row?

Answer 10

You type the index for the row in square brackets then follow by a comma [n, ]

Question 11

When indexing a matrix column

Answer 11

You type a comma in square brackets then follow by the index of the column [ ,n ]