R Console and script files in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print "Hello, world!" in the R console.

R Programming

print([1])

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

AHello, world!

B"Hello, world!"

Cprint("Hello, world!")

DHello

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around the text.

Putting the whole print statement inside print().

In R, to print text, you use print() with the text inside quotes.

2fill in blank

medium

Complete the code to assign the number 10 to a variable named x.

R Programming

x [1] 10

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

A=

B==

C<-

D->

Attempts:

3 left

💡 Hint

Common Mistakes

Using == which is for comparison, not assignment.

Using = which works but <- is preferred style.

In R, the preferred way to assign a value to a variable is using the <- operator.

3fill in blank

hard

Fix the error in the code to correctly run a script file named "script.R".

R Programming

source([1])

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

A"script.R"

Bscript

Cscript.R

D'script.R'

Attempts:

3 left

💡 Hint

Common Mistakes

Not putting the filename in quotes.

Using the filename without extension.

The source() function requires the filename as a string inside quotes.

4fill in blank

hard

Fill both blanks to create a vector of numbers from 1 to 5 and print it.

R Programming

numbers <- [1]([2])

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

Ac

B1:5

Cseq

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using seq without parameters.

Not using c() to create a vector.

Use c() to combine numbers into a vector. 1:5 creates numbers from 1 to 5.

5fill in blank

hard

Fill all three blanks to read a CSV file named "data.csv", assign it to a variable, and print the first rows.

R Programming

[1] <- read.csv([2])
head([3])

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

Amy_data

B"data.csv"

Ddata

Attempts:

3 left

💡 Hint

Common Mistakes

Not putting filename in quotes.

Using different variable names inconsistently.

Assign the result of read.csv() to a variable, then use head() to print first rows.