Gavin is a member of a dance troupe. Which of these questions about the troupe qualifies as a statistical question?

1. How many performances did the troupe have last year?

2. Who is the choreographer for the troupe?
3. What are the names of the dancers in the troupe?
4. How does the average age of the dancers in the troupe compare to the average age of dancers in other troupes in the area?