How are these numbers calculated?

Big Games

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

Week of 10/17100.0*Average seed
Atlanta 0 Tampa Bay 0 -0.3
Indy 3 Minnesota 1 -0.1
Jacksonville 1 Ottawa 3 +0.1
Ottawa 1 San Antonio 0 +0.1
Ft. Lauderdale 4 Carolina 0 +0.1
Week of 10/24100.0*Average seed
Minnesota 1 Atlanta 0 -0.6
Indy 2 Ft. Lauderdale 1 -0.3
San Antonio 1 Cosmos 2 +0.2
Tampa Bay 1 Carolina 0 +0.1
Edmonton 1 Jacksonville 1 +0.1
Carolina 3 Indy 1 +0.0
Week of 10/31100.0*Average seed
Atlanta 1 Ottawa 1 +0.3
Jacksonville 0 Ft. Lauderdale 1 +0.3
Minnesota 2 San Antonio 2 +0.1
Points
Chance Will Win Championship