How are these numbers calculated?

Big Games

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

Week of 4/28100.0*Relegated100.0*Average seed
Hamilton 2 Ross County 0 +18.7
-0.4
Partick Thistle 1 Ross County 1 +5.2
-0.1
Motherwell 2 Dundee 1 -1.8
+0.1
St Johnstone 1 Partick Thistle 1 -1.6
+0.0
Week of 5/5100.0*Relegated100.0*Average seed
Ross County 0 Dundee 1 +10.9
-0.2
Partick Thistle 0 Motherwell 1 -8.1
+0.2
Hamilton 1 St Johnstone 2 -2.1
Dundee 1 Hamilton 0 +1.0
Week of 5/12100.0*Relegated100.0*Average seed
Dundee 0 Partick Thistle 1 Yes
-0.2
St Johnstone 1 Ross County 1 Yes
-0.2
Points
Chance Will Win Championship