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 -0.1
Chick 11 Mitchell 2 In
+0.2
Week of 11/19100.0*Chance in playoffs100.0*Average seed
M. Jackson 7 Chick 4 -0.3
Mitchell 5 Scheck 12 +0.1
Collins 9 Kato 0 -0.0
Games Above .500
Chance Will Make Playoffs