Exercise

Using ratios to describe the frequency of a name

In the video, you learned how to find the difference in the frequency of a baby name between consecutive years. What if instead of finding the difference, you wanted to find the ratio?

You'll start with the babynames_fraction data already, so that you can consider the popularity of each name within each year.

Instructions

100 XP

Arrange the data in ascending order of name and then year.
Group by name so that your mutate works within each name.
Add a column ratio containing the ratio (not difference) between each year.