How are these numbers calculated?

Big Games

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

Week of 11/5100.0*Chance in playoffs100.0*Average seed
M. Jackson 16 Scheck 2 +10.7
+0.8
K. Jackson 4 Collins 8 -0.4
+0.1
Witcraft 8 Kato 6 -0.2
-0.2
Week of 11/19100.0*Chance in playoffs100.0*Average seed
M. Jackson 7 Chick 4 +1.7
Games Above .500
Chance Will Make Playoffs