How are these numbers calculated?

Big Games

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

Week of 5/6100.0*Relegated100.0*Average seed
Inverness CT 2 Hamilton 1 +10.9
-0.5
Motherwell 0 Ross County 1 -3.1
+0.0
Kilmarnock 0 Dundee 1 +2.4
-0.1
Week of 5/13100.0*Relegated100.0*Average seed
Hamilton 0 Motherwell 1 +22.3
-0.6
Ross County 3 Hamilton 2 +12.4
-0.3
Dundee 0 Inverness CT 2 +8.3
-0.2
Motherwell 3 Kilmarnock 1 +5.8
-0.1
Kilmarnock 2 Inverness CT 1 -4.3
+0.1
Dundee 1 Ross County 1 +0.2
+0.0
Week of 5/20100.0*Relegated100.0*Average seed
Inverness CT 3 Motherwell 2 +17.1
-0.3
Hamilton 4 Dundee 0 -14.3
+0.3
Points
Chance Will Win Championship