Numeric and character vectors in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a numeric vector with values 1, 2, and 3.

R Programming

vec <- c([1])

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

A1, 2, 3

B"1", "2", "3"

Cc(1, 2, 3)

D1:3

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around numbers creates character vectors instead of numeric.

Using c(1:3) inside c() is redundant.

The c() function combines values into a vector. Here, 1, 2, 3 creates a numeric vector.

2fill in blank

medium

Complete the code to create a character vector with the names "apple", "banana", and "cherry".

R Programming

fruits <- c([1])

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

Ac("apple", "banana", "cherry")

Bapple, banana, cherry

C"apple", "banana", "cherry"

D'apple', 'banana', 'cherry'

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes makes R think these are variable names, causing errors.

Using single quotes is allowed but less common in R.

Character values must be in quotes inside the c() function. Double quotes are standard in R.

3fill in blank

hard

Fix the error in the code to create a numeric vector from 5 to 10.

R Programming

numbers <- [1](5, 10)

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

Ac

Brange

Cvector

Dseq

Attempts:

3 left

💡 Hint

Common Mistakes

Using c(5, 10) creates a vector with only two numbers, not a sequence.

Using vector() creates an empty vector, not a sequence.

The seq() function generates sequences from a start to an end number. c(5, 10) just combines two numbers.

4fill in blank

hard

Fill both blanks to create a character vector of three fruits and check its type.

R Programming

fruits <- c([1])
is_char <- is.[2](fruits)

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

A"orange", "pear", "grape"

Bnumeric

Ccharacter

D"apple", "banana", "cherry"

Attempts:

3 left

💡 Hint

Common Mistakes

Using numeric type check on character vectors causes FALSE result.

Not quoting fruit names causes errors.

The vector must contain character strings in quotes. The function is.character() checks if the vector is character type.

5fill in blank

hard

Fill all three blanks to create a numeric vector, get its length, and access the second element.

R Programming

nums <- c([1])
len <- length([2])
second <- [3][2]

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

A10, 20, 30

Bnums

Dc(10, 20, 30)

Attempts:

3 left

💡 Hint

Common Mistakes

Putting c(10, 20, 30) inside c() causes nested vectors.

Using wrong variable names causes errors.

Use c(10, 20, 30) to create the vector, but since the blank is inside c(), only the numbers go in the first blank. The variable nums is used to get length and access elements.