How are these numbers calculated?

Big Games

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

Week of 11/13100.0*Average seed
Ponte Preta 1 Bahia 3 -0.5
Figueirense 2 Bragantino 1 +0.1
Sao Caetano 0 Juventude 0 +0.1
Portuguesa 1 Duque de Caxias 1 +0.0
Week of 11/21100.0*Average seed
Ponte Preta 1 Ceara 2 -0.4
Bragantino 1 Brasiliense 2 +0.2
Figueirense 1 Duque de Caxias 2 -0.2
Vila Nova 2 Parana 2 +0.1
Fortaleza 1 Sao Caetano 2 -0.1
Week of 11/27100.0*Average seed
Duque de Caxias 4 Ponte Preta 1 -1.3
Brasiliense 2 Vila Nova 1 +0.4
ABC 0 Bragantino 1 -0.3
Sao Caetano 2 Figueirense 1 -0.3
Points
Chance Will Win Championship