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
Bosnia 3 Belgium 4 -0.3
Switzerland 5 Hungary 2 -0.1
Andorra 0 Portugal 2 -0.0
Week of 10/8100.0*Average seed
Lithuania 0 England 1 +0.2
Poland 4 Montenegro 2 -0.2
Israel 0 Spain 1 -0.1
Belgium 4 Cyprus 0 -0.0
Points
Chance Will Make Playoffs