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
Hertha Berlin 1 Nürnberg 0 +0.8
Schalke 1 Eintracht 0 +0.2
Arminia Bielefeld 2 BVB 2 +0.1
Karlsruher 1 VfL Bochum 3 +0.0
Week of 5/17100.0*Average seed
Bayern München 4 Hertha Berlin 1 -0.6
Eintracht 4 MSV Duisburg 2 -0.4
Hannover 96 4 Energie Cottbus 0 -0.2
Hamburger SV 7 Karlsruher 0 +0.2
VfL Bochum 1 Hansa Rostock 2 +0.1
Points
Chance Will Win Championship