How are these numbers calculated?

Big Games

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

Week of 11/27100.0*Average seed
Jol 119.49 rem 102.87 +0.6
Nin 85.69 jos 91.67 -0.1
Week of 12/4100.0*Average seed
Jol 138.5 Exp 112.21 +0.7
Won 161.26 Nin 67.35 -0.2
Games Above .500
Chance Will Make Playoffs