R Beginner

Question 1

Addition: 
Subtraction: 
Multiplication: 
Division: 
Exponentiation: 
Modulo:

Answer 1

Addition: +
Subtraction: -
Multiplication: *
Division: /
Exponentiation: ^
Modulo: %%
The modulo returns the remainder of the division of the number to the left by the number on its right, for example 5 modulo 3 or 5 %% 3 is 2.

Question 2

assign a value 4 to a variable my_var

Answer 2

Question 3

Error: non-numeric argument to binary operator

Answer 3

# Assign a value to the variable my_apples
my_apples

Question 4

numerics.
integers.
logical.
characters.

Answer 4

Decimal values like 4.5 are called numerics.
Whole numbers like 4 are called integers. Integers are also numerics.
Boolean values (TRUE or FALSE) are called logical.
Text (or string) values are called characters.
Note how the quotation marks in the editor indicate that “some text” is a string.

Question 5

check the data type of a variable

Answer 5

# Declare variables of different types
class(my_numeric)

Question 6

What is a Vector

Answer 6

Vectors are one-dimension arrays that can hold
numeric data,
character data,
or logical data.
In other words, a vector is a simple tool to store data.

Question 7

Naming a vector

Answer 7

Question 8

Sum two vectors

Answer 8

Question 9

Vector selection.

selecting items out of a vector

Answer 9

Question 10

Vector selection.

selecting items 2 to 4

Answer 10

Question 11

Vector selection:

using names

Answer 11

Question 12

for less than
for greater than
for less than or equal to
for greater than or equal to
for equal to each other
not equal to each other

Answer 12

< for less than
> for greater than
<= for less than or equal to
>= for greater than or equal to
== for equal to each other
!= not equal to each other