How are these numbers calculated?

Big Games

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

Week of 11/11100.0*Chance wins title100.0*Serie A100.0*Average seed
Coritiba 2 Atletico-MG 3 +21.3
Yes
+0.3
Avai 1 Nautico 1 +1.6
+0.0
+0.0
Guarani 1 America-RN 2 -0.5
-0.1
Week of 11/18100.0*Chance wins title100.0*Serie A100.0*Average seed
Guarani 2 Sport Recife 0 +12.8
+0.1
Ceara 0 Atletico-MG 1 +12.8
+0.1
Week of 11/25None
Points
Chance Will Win Championship