How are these numbers calculated?

Big Games

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

Week of 5/4100.0*Relegated100.0*Average seed
Dundee 0 Hamilton Accies 1 -2.2
+0.0
Motherwell 1 St Mirren 1 +1.6
-0.0
Week of 5/11100.0*Relegated100.0*Average seed
Livingston 0 Dundee 1 +9.6
-0.2
Week of 5/18100.0*Relegated100.0*Average seed
Hamilton Accies 2 St Johnstone 0 +16.4
-0.3
Dundee 2 St Mirren 3 -14.9
+0.3
Points
Chance Will Win Championship