How are these numbers calculated?

Big Games

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

Week of 2/22100.0*Relegated100.0*Average seed
Motherwell 1 St Mirren 2 +4.4
-0.1
Hamilton Accies 0 Motherwell 0 +1.2
-0.0
Aberdeen 1 Ross County 2 +0.7
Week of 3/3100.0*Relegated100.0*Average seed
Rangers 0 Hamilton Accies 1 -24.2
+0.5
Hibernian 1 Hearts 3 +15.3
-0.3
St Mirren 0 St Johnstone 0 +0.2
Week of 3/7100.0*Relegated100.0*Average seed
Hamilton Accies 1 Kilmarnock 0 -26.3
+0.5
St Mirren 1 Hearts 0 +18.9
-0.4
Hearts 1 Motherwell 1 -1.9
+0.0
Celtic 5 St Mirren 0 -1.8
+0.0
Points
Chance Will Win Championship