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*Chance in playoffs100.0*Direct qualify100.0*Average seed
Scotland 1 Slovakia 0 +3.2
+16.2
+5.0
England 1 Slovenia 0 Out
+0.8
+0.7
Georgia 0 Wales 1 -0.3
-0.1
Bosnia-Herzegov 3 Belgium 4 +0.3
+0.1
Republic of Ire 2 Moldova 0 -0.3
-0.1
Cyprus 1 Greece 2 -0.2
Kosovo 0 Ukraine 2 -0.1
Belarus 1 Netherlands 3 -0.1
Sweden 8 Luxembourg 0 -0.1
Romania 3 Kazakhstan 1 -0.1
Spain 3 Albania 0 +0.1
Bulgaria 0 France 1 +0.1
Turkey 0 Iceland 3 +0.0
Week of 10/10100.0*Chance in playoffs100.0*Direct qualify100.0*Average seed
Slovakia 3 Malta 0 -5.5
-2.0
Greece 4 Gibraltar 0 -3.8
-0.1
Slovenia 2 Scotland 2 -2.2
+0.5
Serbia 1 Georgia 0 -0.6
-0.1
Norway 1 N Ireland 0 +0.2
Poland 4 Montenegro 2 +0.2
Albania 0 Italy 1 -0.1
Iceland 2 Kosovo 0 -0.1
Estonia 1 Bosnia-Herzegov 2 -0.1
France 2 Belarus 1 -0.1
Finland 2 Turkey 2 +0.1
Denmark 1 Romania 1 -0.0
Points
Chance Will Make Playoffs