How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Serie B100.0*Average seed
Goias 1 Santos 4 Yes
-0.1
Palmeiras 0 Atletico-MG 2 +0.4
Avai 3 Atletico-GO 0 +0.2
Week of 11/28100.0*Serie B100.0*Average seed
Atletico-MG 3 Goias 1 -0.1
Botafogo 3 Gremio Prudente 1 +0.1
Week of 12/5None
Points
Chance Will Win Championship