How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Average seed
Erica 60.14 Ethan 78 +0.9
Jenn 75.58 Eric 99.54 -0.1
Week of 12/1100.0*Average seed
Shara 91.96 Ethan 113.3 +1.7
Tom K 59.98 Eric 102.96 -0.3
Games Above .500
Chance Will Make Playoffs