How are these numbers calculated?

Big Games

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

Week of 5/16100.0*Chance wins title100.0*Average seed
Hannover 96 0 VfL Wolfsburg 5 +25.6
+0.6
VfB Stuttgart 2 Energie Cottbus 0 -7.0
-0.2
Hertha Berlin 0 Schalke 0 +4.5
+0.1
Hoffenheim 2 Bayern München 2 +2.8
+0.0
VfL Bochum 2 Eintracht 0 -0.1
Hamburger SV 0 FC Köln 1 -0.1
Week of 5/23100.0*Chance wins title100.0*Average seed
VfL Wolfsburg 5 Werder Bremen 1 Yes
+0.3
Bayern München 2 VfB Stuttgart 1 -10.0
-0.1
VfL Borussia 1 BVB 1 -0.8
Arminia Bielefeld 2 Hannover 96 2 -0.7
Schalke 2 Hoffenheim 3 -0.6
Points
Chance Will Win Championship