How are these numbers calculated?

Big Games

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

Week of 9/28100.0*Chance in playoffs100.0*Average seed
Caxias 2 Vila Nova 1 +5.6
+0.6
Guarani 1 Betim 2 +1.8
+0.1
Macaé 2 CRAC 1 -0.5
-0.1
Mogi Mirim 1 Madureira 1 +0.1
+0.2
Week of 10/5100.0*Chance in playoffs100.0*Average seed
Madureira 1 Betim 1 In
+0.0
Mogi Mirim 1 Macaé 2 In
-0.1
Caxias 1 Grêmio Barueri 1 In
-0.4
Week of 10/12100.0*Chance in playoffs100.0*Average seed
Duque de Caxias 1 Caxias 0 -0.3
Betim 2 Mogi Mirim 1 +0.1
Macaé 0 Vila Nova 1 +0.1
Points
Chance Will Make Playoffs