How are these numbers calculated?

Big Games

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

Week of 8/11100.0*Chance in playoffs100.0*Average seed
GhilaniElectric 5 District5 5 +5.2
+0.0
Zamboozers 6 JusttheTip 3 +2.5
+0.0
Shocker 4 YYZ 7 -2.5
-0.1
Badgers 4 Franklin 10 *-0.1
Week of 8/18None
Week of 8/25None

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

Points
Chance Will Make Playoffs