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 -0.1
-1.0
Legends 2 IE Surf 0 -0.7
PDA 0 Legends 4 +0.3
Surf 0 Navy 1 +0.2
Kaufman 0 Navy 3 +0.2
Surf 0 Hodson 1 +0.2
Kaufman 1 LAGSD 2 +0.1
Demelo 2 LAGSB 0 +0.1
LAGSB 3 PDA 5 -0.1
Albion 2 LAGSD 4 +0.0
Week of 1/21100.0*Chance wins title100.0*Average seed
IE Surf 3 Kaufman 0 +0.9
PDA 2 IE Surf 1 -0.7
PDA 1 Demelo 3 +0.1
DMCV 1 LAGSD 0 -0.1
Navy 4 Albion 0 +0.1
Surf 1 Kaufman 2 -0.1
Legends 3 Albion 0 +0.0
Week of 1/29None
Points
Chance Will Win Championship