Are these on a scale from 1-10?
Fan Approval is pretty self-explanatory, but what is Bandwagon considered in the game?
And what effect do these two things have in the game?
If they are based on 1-10, why is fan base on a 1-100 scale?
How do these 3 things tie together in the game?

I have the same question. Also noticed that my fan approval is quite low despite winning 2 national tittles in a row and going for the third being the only team wiithout a loose in the season. Several other sucesful teams struggle the samy way with "1" or even negative numbers in fan approval column.