Combining levels of a different factor

Another common way of creating a new variable based on an existing one is by combining levels of a categorical variable. For example, the email50 dataset has a categorical variable called number with levels "none", "small", and "big", but suppose we're only interested in whether an email contains a number. In this exercise, we will create a variable containing this information and also visualize it.

For now, do your best to understand the code we've provided to generate the plot. We will go through it in detail in the next video.

Create a new column in email50 called number_yn that is "no" if there is no number in the email and "yes" otherwise. Use case_when() for this . Assign this to email50_fortified. Remember that you can type ?case_when in the console to get a refresher on how to use it!
Run the code provided to visualize the distribution of the number_yn variable.

Exercise

Combining levels of a different factor

Instructions