How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Average seed
Atletico-MG 2 Atletico-GO 2 +0.0
Week of 11/25100.0*Average seed
Figueirense 2 Gremio 4 -0.2
Palmeiras 1 Atletico-GO 2 -0.1
Week of 12/1100.0*Average seed
Atletico-GO 0 Bahia 1 +0.3
Coritiba 3 Figueirense 0 -0.3
Points
Chance Will Win Championship