How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Serie C100.0*Average seed
Icasa 1 Parana 2 +22.8
-0.7
America-RN 2 Icasa 0 +16.6
-0.6
Vila Nova 0 Oeste 1 +8.4
-0.2
Bragantino 2 Santa Cruz 1 +7.9
-0.2
Oeste 2 Nautico 0 +6.6
-0.1
Atletico-GO 1 Bragantino 0 -1.8
+0.0
ABC 1 Ceara 0 +1.8
-0.1
Ponte Preta 2 America-RN 2 +0.7
-0.1
Week of 11/21100.0*Serie C100.0*Average seed
America-RN 1 Nautico 0 +1.0
-0.2
Bragantino 1 Parana 1 -0.5
Week of 11/29None
Points
Chance Will Win Championship