How are these numbers calculated?

Big Games

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

Week of 5/8100.0*Relegated100.0*Average seed
Lecce 2 Napoli 1 +0.5
-0.1
Brescia 1 Catania 2 -0.3
+0.8
Cagliari 0 Cesena 2 +0.3
-0.1
Genoa 2 Sampdoria 1 -0.2
+0.0
Juventus 2 Chievo 2 -0.0
Bologna 0 Parma 0 -0.0
Week of 5/22100.0*Relegated100.0*Average seed
Bologna 0 Bari 4 +0.7
Palermo 1 Chievo 3 -0.5
Inter 3 Catania 1 -0.5
Cagliari 1 Parma 1 +0.3
Genoa 3 Cesena 2 -0.1
Points
Chance Will Win Championship