R

Learn R for statistical computing and data analysis.

Hello World

R uses print() or cat() to output text. R is a language designed for statistical computing and graphics.

Example

Run this example to see how it works and then try the exercise.

Output

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Exercise

Your task: Print "Hello, World!" using the print() function

Output

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Quiz

What symbol starts a comment in R?

SUMMARY

In this section, you learned how to print output to the console. Next, you’ll learn how to declare variables and assign values.

Variables and Assignment

R uses <- (preferred) or = for assignment. Variables don’t need type declarations.

Example

Run this example to see how it works and then try the exercise.

Output

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Exercise

Your task: Create variables: name, age, is_learning using <-

Output

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Quiz

What is the preferred assignment operator in R?

SUMMARY

In this section, you learned how to declare variables and assign values. Next, you’ll learn how to work with different data types.

Data Types

R has basic types: numeric, character, logical, integer, and complex. Use class() to check type.

Example

Run this example to see how it works and then try the exercise.

Output

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Exercise

Your task: Create variables of different types and print their classes

Output

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Mark exercise as completed

Quiz

How do you create an integer in R?

SUMMARY

In this section, you learned how to work with different data types. Next, you’ll learn how to work with vectors to store multiple values.

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Locked lessons:

Vectors
Arithmetic Operations
Conditionals
For Loops
While Loops
Functions
Lists
Data Frames
String Operations

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Hello World

Variables and Assignment

Data Types

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