R Prophram

Question 1

They are two types of vectors?

Answer 1

Atomic, and list

Question 2

What is a vector?

Answer 2

A group of elements that are the same type.

Question 3

What are the six primary vectors ?

Answer 3

Logical
Intergel
Double
Characters
Complex
Raw

Question 4

Double and Intriguers are knows as ?

Answer 4

Numeric vectors

Question 5

Logical and character vector are knows as?

Answer 5

Atomic

Question 6

What is the C function in R called?

Answer 6

Combine function

Question 7

How to create a numeric vector?

Answer 7

C(adds numbers follow by comas )

Question 8

How to create a intriguer

Answer 8

C( number and an L separate by comma)

Question 9

Characters vectors?

Answer 9

C( “Liz”, “anna”, “david”)

Question 10

For logical vector ?

Answer 10

C( true, false, true)

Question 11

Every vector has two keys properties?

Answer 11

Type and length

Question 12

To know the type of vector?

Answer 12

Typeof()

Question 13

Typeof function exp

Answer 13

Typeof(c( “a”,”b”,”c”))

Question 14

How to determine the length of a vector?

Answer 14

Length()

Question 15

How to add a variable and know the length example.

Answer 15

X< c(33.5,57,45)
Length(x)
3

Question 16

Ana they way to know the type of vector is by ?

Answer 16

Is.function

Question 17

Example of is.

Answer 17

Is. Logical() is.double()
Add variable
X< c(2l,3l,6l)
Is. Interguer (x)
If true or false will answer

Question 18

E

Question 19

How to name a vector ?

Answer 19

Names()

Question 20

Example of a name function

Answer 20

X<c( 1,2,3)
Names(x)<c(“a”,”b”,”c”)

Question 21

If one wants a different element in the same structure one creates a?

Answer 21

List

Question 22

What are the data structures?

Answer 22

Vectors
Data frames
Matrices
Arrays

Question 23

How to create a list ?

Answer 23

List(x,y,z)

Question 24

How to determine the structure of a list?

Answer 24

Use the str() function
Example
Str(list(“a”,1L, 15, true)

Question 25

One can name a list when first created
Example.

Answer 25

List(‘Chicago’=1, ‘new York’=2, ‘San Francisco’=4)