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
Botafogo 2 Goias 2 -0.1
Parana 1 Internacional 0 -0.1
Sao Caetano 0 Vasco da Gama 1 -0.1
Flamengo 0 Figueirense 2 -0.0
Corinthians 1 Fluminense 1 +0.0
Week of 11/26100.0*Average seed
Goias 3 Ponte Preta 0 -0.2
Gremio 3 Flamengo 0 +0.2
Sao Paulo 2 Cruzeiro 0 +0.1
Botafogo 0 Corinthians 0 -0.1
Juventude 2 Fortaleza 2 +0.0
Week of 12/2100.0*Average seed
Cruzeiro 3 Botafogo 1 -1.3
Flamengo 4 Sao Caetano 1 -0.4
Corinthians 5 Juventude 3 -0.3
Internacional 1 Goias 4 -0.3
Points
Chance Will Win Championship