Gain insights into R, the leading language for data analysis. Learn about its basics, advanced concepts, and practical coding to drive valuable insights from large datasets.

The digital world we live in has given companies and people access to staggering amounts of data, and anyone that can make use of that to drive valuable insights stands to benefit. The ability to work with large amounts of data is becoming a standard requirement for countless jobs across multiple industries.

Enter R, probably the most well-known language for data analysis. It's been used for years due to its robust statistical functionality, outstanding graphing ability, and extensibility through packages.

This interactive course will get you up to speed and assumes no prior knowledge of R. You'll start with the very basics and work your way up to advanced concepts like exception handling. By the time you're done, you'll be able to write detailed, useful code in R yourself.

Learn R from Scratch

# Problem Statement

Given a vector of numbers, print a **vector** where each element tells whether the corresponding input vector's element is an **even** number or an **odd** number.

> Use `cat()` for printing.

## Input
A `testVariable` containing the vector of numbers.

## Output
A vector where each element corresponds to the correct condition of the elements of the input vector.

## Sample Input
```
testVariable -> c(2, 10, 7, 400)
```

## Sample Output
```
even even odd even
```
## Test Yourself
Write your code in the given area. If you get stuck, you can look at the solution.

cat(ifelse(testVariable %% 2 == 0, "even", "odd"))

Let's test your understanding of the "ifelse()" function.

Getting Started

Variables

Exploring R Objects

R Operators and Notation

Conditional Statements

Loops

Functions

Input/Output

Exception Handling

Classes

Fun Challenges

Conclusion

Exercise 9: ifelse()

Problem Statement

Input

Output

Sample Input

Sample Output

Test Yourself