How are these numbers calculated?

Big Games

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

Week of 5/18100.0*Chance in playoffs100.0*Average seed
North Shore 0 MTA 13 In
+0.7
TABC 10 MTA 2 -0.9
North Shore 4 Haftr 10 -0.1
Haftr 2 Frisch 12 +0.1
Flatbush 1 Frisch 5 +0.1
Heschel 3 Flatbush 5 -0.1
Kushner 2 TABC 0 -0.1
Week of 5/28100.0*Chance in playoffs100.0*Average seed
Frisch 7 MTA 0 -0.6
TABC 1 SAR 5 +0.1
Week of 6/2100.0*Chance in playoffs100.0*Average seed
MTA 6 Haftr 4 +0.5
Ramaz 4 Haftr 7 +0.2
Points
Chance Will Make Playoffs