How are these numbers calculated?

Big Games

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

Week of 4/30100.0*Relegated100.0*Average seed
Aberdeen 1 Inverness CT 0 No
+0.4
Hibernian 1 St. Johnstone 2 -0.1
St. Mirren 0 Hamilton 1 +0.1
Week of 5/7100.0*Relegated100.0*Average seed
Aberdeen 0 St. Johnstone 2 -0.6
Aberdeen 0 St. Mirren 1 -0.3
Hamilton 1 Hibernian 0 +0.2
Inverness CT 2 Hibernian 0 +0.1
Inverness CT 1 St. Mirren 0 +0.0
Week of 5/14100.0*Relegated100.0*Average seed
Hibernian 1 Aberdeen 3 +0.8
St. Mirren 0 St. Johnstone 0 +0.1
Points
Chance Will Win Championship