How are these numbers calculated?

Big Games

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

Week of 5/1100.0*Serie B100.0*Average seed
Palermo 2 Sampdoria 0 +0.2
-0.1
Juventus 2 Carpi 0 -0.1
Milan 3 Frosinone 3 +0.1
+0.0
Week of 5/8100.0*Serie B100.0*Average seed
Frosinone 0 Sassuolo 1 Yes
Carpi 1 Lazio 3 -0.1
Fiorentina 0 Palermo 0 +0.1
Week of 5/15None
Points
Chance Will Win Championship