How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance wins title100.0*Libertadores100.0*Average seed
Vasco da Gama 2 Avai 0 No
-0.2
Atletico-GO 0 Flamengo 0 -10.3
-0.4
Figueirense 0 Fluminense 4 +1.5
+0.0
Sao Paulo 3 America-MG 1 -1.2
-0.1
Botafogo 1 Internacional 2 +1.1
Coritiba 1 Santos 0 +0.1
-0.0
Week of 11/27100.0*Chance wins title100.0*Libertadores100.0*Average seed
Flamengo 1 Internacional 0 +25.0
+1.5
Figueirense 0 Corinthians 1 +6.4
+0.2
Palmeiras 1 Sao Paulo 0 +2.1
+0.3
Atletico-MG 4 Botafogo 0 +1.3
+0.2
Coritiba 1 Avai 0 -0.4
-0.2
Fluminense 1 Vasco da Gama 2 +0.3
Santos 1 Bahia 1 +0.1
Week of 12/4100.0*Chance wins title100.0*Libertadores100.0*Average seed
Vasco da Gama 1 Flamengo 1 Yes
+0.5
Avai 1 Figueirense 1 +6.5
+0.2
Internacional 1 Gremio 0 -6.2
-0.2
Atletico-PR 1 Coritiba 0 +5.4
+0.2
Botafogo 1 Fluminense 1 -0.1
Points
Chance Will Win Championship