1) How would you grow a YouTube channel's subscriber base?
2) What analytical techniques would use in this type of marketing campaign?
3) How important are external advertising factors (video titles, subscriber engagement, etc.)?
4) When would use this type of visualization (a pie chart, a line chart, etc.)?
5) When you are measuring categorical data, how would you visualize it?
6) What is an aggregate function in SQL and how would use them?