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*Average seed
Juventus 2 Chievo 2 -0.3
Palermo 2 Bari 1 -0.0
Week of 5/22100.0*Average seed
Palermo 1 Chievo 3 +0.4
Juventus 2 Napoli 2 -0.2
Roma 3 Sampdoria 1 -0.1
Points
Chance Will Win Championship