How are these numbers calculated?

Big Games

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

Week of 10/7100.0*Average seed
Belarus 1 Netherlands 3 -0.9
Sweden 8 Luxembourg 0 +0.3
Andorra 0 Portugal 2 +0.1
Week of 10/8100.0*Average seed
France 2 Belarus 1 -0.5
Luxembourg 1 Bulgaria 1 -0.1
Serbia 1 Georgia 0 +0.1
Moldova 0 Austria 1 +0.0
Lithuania 0 England 1 +0.0
Points
Chance Will Make Playoffs