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
CarpetAngels 4 PuckBuddies 5 +9.8
+0.1
DragonSlayers 5 YYZ 4 -7.7
-0.1
IceHogs 2 Brewskis 2 (ot)+0.2
Hagen 8 SlapShot 6 +0.1
Week of 8/26100.0*Chance in playoffs100.0*Average seed
PlanB 4 DragonSlayers 9 Out
-0.2
PuckBuddies 5 Lumberhacks 3 +14.2
+0.1
Week of 9/5None
Points
Chance Will Make Playoffs