Logical (boolean) type in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a logical variable with value TRUE.

R Programming

flag <- [1]

Drag options to blanks, or click blank then click option'

Atrue

BTRUE

C"TRUE"

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'true' which is not recognized in R.

Using quotes around TRUE, which makes it a string, not logical.

In R, logical TRUE is written as TRUE (all uppercase, no quotes).

2fill in blank

medium

Complete the code to check if 5 is greater than 3 and store the result in a logical variable.

R Programming

result <- 5 [1] 3

Drag options to blanks, or click blank then click option'

A>

B<

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' which means less than.

Using '==' which checks equality, not greater than.

The expression 5 > 3 returns TRUE because 5 is greater than 3.

3fill in blank

hard

Fix the error in the code to correctly assign a logical FALSE value.

R Programming

is_valid <- [1]

Drag options to blanks, or click blank then click option'

A0

BFalse

C"FALSE"

DFALSE

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'False' which is not recognized in R.

Using quotes around FALSE, making it a string.

Logical FALSE in R is written as FALSE (all uppercase, no quotes).

4fill in blank

hard

Fill both blanks to create a logical vector with TRUE and FALSE values.

R Programming

vec <- c([1], [2])

Drag options to blanks, or click blank then click option'

ATRUE

BFALSE

C"TRUE"

D"FALSE"

Attempts:

3 left

💡 Hint

Common Mistakes

Using quoted strings instead of logical values.

Using lowercase true or false.

Logical vectors use TRUE and FALSE without quotes.

5fill in blank

hard

Fill all three blanks to create a logical vector with TRUE, FALSE, and the result of 2 == 2.

R Programming

vec <- c([1], [2], [3])

Drag options to blanks, or click blank then click option'

ATRUE

BFALSE

C2 == 2

D"TRUE"

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around TRUE or FALSE.

Using incorrect comparison operators.

The vector contains logical TRUE, logical FALSE, and the result of the comparison 2 == 2 which is TRUE.