Numeric type in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a numeric variable with value 10.

R Programming

num <- [1]

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

Ac(10)

B"10"

CTRUE

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around the number, which makes it a string.

Using TRUE which is logical, not numeric.

The number 10 is assigned directly as a numeric value without quotes.

2fill in blank

medium

Complete the code to check if variable x is numeric.

R Programming

is.numeric([1])

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

Ax

B10

C"x"

DTRUE

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the variable name as a string.

Passing a literal number instead of the variable.

Use the variable name without quotes to check its type.

3fill in blank

hard

Fix the error in the code to convert a string to numeric.

R Programming

num <- as.numeric([1])

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

ATRUE

Bnum

C"10"

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a numeric value directly to as.numeric().

Passing a logical value instead of a string.

Use a string "10" to convert it to numeric with as.numeric().

4fill in blank

hard

Fill both blanks to create a numeric vector and check its type.

R Programming

vec <- c([1], [2])
is.numeric(vec)

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

A5

B"5"

C10

D"10"

Attempts:

3 left

💡 Hint

Common Mistakes

Using quoted numbers which create character vectors.

Mixing numeric and character values in the vector.

Use numeric values 5 and 10 without quotes to create a numeric vector.

5fill in blank

hard

Fill all three blanks to create a numeric vector, convert a string to numeric, and check types.

R Programming

vec <- c([1], [2])
num <- as.numeric([3])
is.numeric(vec) && is.numeric(num)

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

A3

B"7"

Attempts:

3 left

💡 Hint

Common Mistakes

Using quoted numbers in the vector.

Passing numeric values directly to as.numeric() unnecessarily.

Use numeric values 3 and 3 for the vector, convert string "7" to numeric.