When comparing marketing campaigns performances it’s better to use a highlevel metric like click-to-signup or view-to-signup rate. If we see a campaign that has a very low value of the metric we can zoom in and find a specific funnel step where we lose most of the users.
In this exercise let’s find which country has the lowest click-to-signup conversion rate.
Consider countries with at least 10 signups.
Submit the country code from the country column. For example, ru.
About SQL Habit
Hi, it’s Anatoli, the author of SQL Habit. 
SQL Habit is a course (or, as some of the students say, “business simulator”). It’s based on a story of a fictional startup called Bindle. You’ll play a role of their Data Analyst 
and solve real-life challenges from Business, Marketing, and Product Management.
SQL Habit course is made of bite-sized lessons and exercises (you’re looking at one atm). They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 
