How are these numbers calculated?

Big Games

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

Week of 5/10100.0*Average seed
Arminia Bielefeld 2 BVB 2 -0.2
Karlsruher 1 VfL Bochum 3 -0.2
Hertha Berlin 1 Nürnberg 0 -0.1
Schalke 1 Eintracht 0 +0.1
Week of 5/17100.0*Average seed
BVB 2 VfL Wolfsburg 4 -0.5
Hamburger SV 7 Karlsruher 0 +0.2
VfL Bochum 1 Hansa Rostock 2 +0.1
Eintracht 4 MSV Duisburg 2 -0.1
Points
Chance Will Win Championship