How are these numbers calculated?

Big Games

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

Week of 10/15100.0*Average seed
Indy 3 Carolina 0 -1.0
Tampa Bay 2 Indy 3 +0.2
Minnesota 3 Edmonton 1 -0.2
Rayo OKC 3 Ottawa 1 +0.1
Jacksonville 3 Miami 2 -0.1
Jacksonville 2 Cosmos 4 +0.1
Ft. Lauderdale 2 Puerto Rico 0 -0.0
Week of 10/22100.0*Average seed
Carolina 1 Minnesota 0 +1.5
Ft. Lauderdale 0 Rayo OKC 2 +0.2
Tampa Bay 1 Ottawa 1 +0.1
Indy 3 Puerto Rico 0 +0.1
Edmonton 1 Jacksonville 0 +0.0
Week of 10/29100.0*Average seed
Puerto Rico 2 Carolina 1 -0.8
Jacksonville 3 Tampa Bay 2 +0.4
Minnesota 0 Cosmos 1 +0.3
Ottawa 0 Ft. Lauderdale 1 -0.2
Points
Chance Will Win Championship