How are these numbers calculated?

Big Games

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

Week of 5/6100.0*Average seed
Borussia Dortmund 2 Hoffenheim 1 +0.5
Hertha 1 Leipzig 4 -0.0
Week of 5/13100.0*Average seed
Werder Bremen 3 Hoffenheim 5 -0.1
Augsburg 1 Borussia Dortmund 1 -0.1
Week of 5/20100.0*Average seed
Borussia Dortmund 4 Werder Bremen 3 +0.3
Hoffenheim 0 Augsburg 0 +0.2
Points
Chance Will Win Championship