How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Average seed
Mainz 3 Eintracht 3 +0.2
SC Freiburg 1 VfL Wolfsburg 0 +0.1
Hoffenheim 5 Hamburger SV 1 +0.1
Week of 5/8100.0*Average seed
VfL Wolfsburg 3 Eintracht 1 -0.4
Mainz 0 Schalke 0 -0.1
Points
Chance Will Win Championship