How are these numbers calculated?

Big Games

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

Week of 8/19100.0*Chance in playoffs100.0*Average seed
IceHogs 2 ScreaminSeagulls 6 -15.2
-0.6
Renegades 1 GoldenSeals 7 -6.1
-0.1
IceHogs 2 Brewskis 2 (ot)+3.6
+0.2
Brewers 4 Brewskis 4 (ot)-2.9
-0.0
Week of 8/26100.0*Chance in playoffs100.0*Average seed
Brewskis 1 GoldenSeals 0 -2.8
-0.0
ScreaminSeagulls 4 BluesBrothers 5 -2.1
+0.2
Week of 9/5None
Points
Chance Will Make Playoffs