How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/5100.0*Average seed
Masters 5 Otaki 7 -0.1
Paekakariki 3 Masters 2 -0.1
Choppers 0 Manakau 8 +0.1
Choppers 4 Babas 4 +0.1
Babas 2 Masters 2 -0.1
Hawks 2 Choppers 2 +0.1
Points
Chance Will Win Championship