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
Motherwell 0 Ross County 1 +10.5
-0.5
Kilmarnock 0 Dundee 1 +3.1
-0.1
Inverness CT 2 Hamilton 1 -1.1
+0.1
Week of 5/13100.0*Relegated100.0*Average seed
Hamilton 0 Motherwell 1 -23.3
+0.7
Motherwell 3 Kilmarnock 1 -7.3
+0.5
Ross County 3 Hamilton 2 -6.0
+0.1
Kilmarnock 2 Inverness CT 1 -4.9
Dundee 1 Ross County 1 +0.2
Dundee 0 Inverness CT 2 +0.3
Week of 5/20100.0*Relegated100.0*Average seed
Inverness CT 3 Motherwell 2 -0.4
Hamilton 4 Dundee 0 +0.3
Kilmarnock 1 Ross County 2 +0.2
Points
Chance Will Win Championship