How are these numbers calculated?

Big Games

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

Week of 11/6100.0*Chance in playoffs100.0*Average seed
Hartman 10 Kato 3 +1.1
Zwiefel 9 M. Jackson 4 Out
+0.1
K. Jackson 5 Scheck 8 +0.1
Week of 11/20100.0*Chance in playoffs100.0*Average seed
Zwiefel 7 Schoolman 11 -0.8
Chick 7 Scheck 6 -0.4
Games Above .500
Chance Will Make Playoffs