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 -2.6
+0.6
Inverness CT 2 Hamilton 1 -0.8
+0.1
Kilmarnock 0 Dundee 1 +0.6
-0.0
Partick Thistle 1 Rangers 2 +0.1
Week of 5/13100.0*Relegated100.0*Average seed
Dundee 1 Ross County 1 No
-0.0
Hamilton 0 Motherwell 1 No
Ross County 3 Hamilton 2 +0.5
Partick Thistle 0 Celtic 5 +0.3
Kilmarnock 2 Inverness CT 1 -0.2
St. Johnstone 1 Partick Thistle 0 +0.1
Motherwell 3 Kilmarnock 1 +0.1
Dundee 0 Inverness CT 2 +0.0
Week of 5/20100.0*Relegated100.0*Average seed
Kilmarnock 1 Ross County 2 +0.7
Points
Chance Will Win Championship