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
Flamengo 0 Figueirense 2 -1.3
Botafogo 2 Goias 2 +0.1
Corinthians 1 Fluminense 1 +0.1
Juventude 3 Palmeiras 2 -0.0
Sao Paulo 1 Atletico-PR 1 +0.0
Week of 11/26100.0*Average seed
Gremio 3 Flamengo 0 -1.0
Goias 3 Ponte Preta 0 -0.2
Sao Paulo 2 Cruzeiro 0 +0.2
Botafogo 0 Corinthians 0 +0.1
Atletico-PR 1 Figueirense 4 +0.1
Juventude 2 Fortaleza 2 +0.1
Week of 12/2100.0*Average seed
Flamengo 4 Sao Caetano 1 +1.5
Corinthians 5 Juventude 3 -0.6
Cruzeiro 3 Botafogo 1 -0.3
Internacional 1 Goias 4 -0.2
Points
Chance Will Win Championship