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
St. Mirren 0 Hamilton 1 +2.8
-0.2
Aberdeen 1 Inverness CT 0 -0.1
Hibernian 1 St. Johnstone 2 -0.1
Week of 5/7100.0*Relegated100.0*Average seed
Aberdeen 0 St. Mirren 1 -12.3
+0.2
St. Johnstone 1 Hamilton 0 -12.2
+0.1
Hamilton 1 Hibernian 0 +5.3
Inverness CT 1 St. Mirren 0 +4.4
-0.1
Aberdeen 0 St. Johnstone 2 +0.1
Week of 5/14100.0*Relegated100.0*Average seed
Hibernian 1 Aberdeen 3 -0.1
St. Mirren 0 St. Johnstone 0 -0.1
Points
Chance Will Win Championship