Comparison operators in R Programming - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the == operator do in R?

The == operator checks if two values are equal and returns TRUE if they are, otherwise FALSE.

beginner

How do you check if one value is greater than another in R?

Use the > operator to check if the left value is greater than the right value. It returns TRUE or FALSE.

beginner

What is the difference between == and != in R?

== checks if two values are equal, while != checks if two values are NOT equal.

beginner

What do the operators <= and >= mean in R?

<= means 'less than or equal to' and >= means 'greater than or equal to'. They compare two values and return TRUE or FALSE.

intermediate

How does R handle comparison of vectors with comparison operators?

R compares vectors element by element and returns a logical vector of TRUE or FALSE for each comparison.

What will 5 == 5 return in R?

A TRUE

B FALSE

C 5

D Error

== checks equality and returns TRUE if values are equal.

Which operator checks if two values are NOT equal in R?

A <=

B ==

C >=

D !=

!= means 'not equal to' and returns TRUE if values differ.

What does 3 >= 4 return?

A FALSE

B TRUE

C 3

D 4

3 >= 4 means '3 greater than or equal to 4', which is false.

How does R compare vectors with < operator?

A Throws an error

B Compares only first elements

C Element-wise comparison returning logical vector

D Returns a single TRUE or FALSE

R compares each element of vectors and returns a logical vector.

What is the result of c(1,2,3) == 2 in R?

A TRUE TRUE TRUE

B FALSE TRUE FALSE

C TRUE FALSE TRUE

D FALSE FALSE FALSE

Only the second element equals 2, so result is FALSE TRUE FALSE.

Explain how comparison operators work in R and give examples of at least three different operators.

Think about how you check if two things are equal or one is bigger than the other.

Describe how R handles comparison when using vectors instead of single values.

Imagine comparing two lists of numbers one by one.