How are these numbers calculated?

Big Games

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

Week of 10/20100.0*Average seed
Wisconsin 30 Iowa 55 +0.3
Portland 27 Texas 56 -0.2
Los Angeles 45 Boston 52 +0.1
Week of 10/26100.0*Average seed
Iowa 37 North Dakota 34 +0.3
Texas 52 Vicenza 41 -0.2
Corpus Christi 45 Los Angeles 60 -0.1
Week of 11/2100.0*Average seed
Los Angeles 40 Iowa 43 +0.5
Texas 36 North Dakota 30 -0.3
Games Above .500
Chance Will Make Playoffs