How are these numbers calculated?

Big Games

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

Week of 1/14100.0*Chance wins title100.0*Average seed
DMCV 2 IE Surf 1 No
-0.5
Legends 2 IE Surf 0 -0.3
Surf 0 Navy 1 +0.1
Surf 0 Hodson 1 +0.1
Kaufman 0 Navy 3 +0.1
Kaufman 1 LAGSD 2 +0.1
LAGSB 3 PDA 5 -0.1
PDA 0 Legends 4 +0.1
Hodson 3 LAGSB 0 +0.1
Demelo 2 LAGSB 0 +0.1
Week of 1/21100.0*Chance wins title100.0*Average seed
IE Surf 3 Kaufman 0 +0.9
PDA 2 IE Surf 1 -0.8
DMCV 1 LAGSD 0 -0.2
Legends 2 DMCV 0 +0.0
PDA 1 Demelo 3 +0.0
Week of 1/29None
Points
Chance Will Win Championship