How are these numbers calculated?

Big Games

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

Week of 4/13100.0*Average seed
NEC Nijmegen 1 Vitesse Arnhem 0 +0.6
Roda JC 4 VVV Venlo 1 -0.1
Week of 4/20100.0*Average seed
NAC Breda 1 NEC Nijmegen 3 +1.0
FC Utrecht 1 FC Groningen 0 -0.3
Feyenoord 3 Roda JC 0 +0.0
Points
Chance Will Win Championship