How are these numbers calculated?

Big Games

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

Week of 3/6100.0*Chance wins title100.0*Average seed
DUN 1 BRA 2 No
-0.5
MAN 2 FIF 8 No
+0.2
EDI 2 DUN 10 +0.3
BRA 8 MAN 3 +0.2
Week of 3/13100.0*Chance wins title100.0*Average seed
MAN 3 BRA 6 -0.1
DUN 13 EDI 2 +0.0
Week of 3/20None
Points
Chance Will Win Championship