Conditional Statements in R: if_else() and case_when() Functions

In this tutorial, Greg Martin introduces the Star Wars dataset and demonstrates how to use the tidyverse and GT Extras packages for data manipulation and table formatting. The video covers the use of the if_else function for conditional data changes and the case_when function for handling multiple conditions simultaneously. The tutorial is designed to help viewers replicate the process on their own computers, enhancing their learning experience.

What data set is used in this tutorial?

• Harry Potter

• Marvel Universe

• Star Wars

• Lord of the Rings

What is the primary purpose of the GT Extras package?

• To analyze data

• To create plots

• To perform statistical tests

• To make tables visually appealing

What function is used to overwrite existing variables in the data set?

• select

• arrange

• mutate

• filter

What does the if-else function do when both conditions are met?

• Adds new data

• Changes the data to a specified value

• Deletes the data

• Leaves the data unchanged

What is the advantage of using the case-when function?

• It is easier to understand

• It requires less code

• It is faster than if-else

• It can handle multiple conditions simultaneously

What happens if none of the conditions in case-when are met?

• The data is left unchanged

• The data is deleted

• The data is set to NA

• An error is thrown

What change is made to humans with brown hair using case-when?

• Their hair color is unchanged

• Their hair color is changed to green

• Their hair color is changed to pink

• Their hair color is changed to blue