How are these numbers calculated?

Big Games

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

Week of 5/8100.0*Average seed
Wolfsberger AC 2 Austria Wien 1 +0.2
Rheindorf Altach 1 St. Pölten 3 +0.1
Admira 1 Mattersburg 1 -0.1
Week of 5/13100.0*Average seed
St. Pölten 2 Austria Wien 0 +0.2
Salzburg 1 Mattersburg 0 -0.1
Week of 5/20100.0*Average seed
Austria Wien 4 Salzburg 0 -0.4
Mattersburg 2 LASK Linz 1 +0.1
Points
Chance Will Win Championship