How are these numbers calculated?

Big Games

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

Week of 5/1100.0*Relegated100.0*Average seed
St Mirren 1 Hamilton Accies 2 -12.1
+0.2
Dundee Utd 0 Ross County 2 +6.5
-0.1
Motherwell 2 Kilmarnock 0 -3.6
+0.1
Week of 5/12100.0*Relegated100.0*Average seed
Ross County 2 Hamilton Accies 1 +21.1
-0.4
Kilmarnock 3 St Mirren 3 +1.9
-0.0
Week of 5/15100.0*Relegated100.0*Average seed
Hamilton Accies 0 Kilmarnock 2 Yes
-0.1
Points
Chance Will Win Championship