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
Aberdeen 1 Ross County 2 -1.8
+0.3
Hamilton Accies 0 Motherwell 0 -0.7
+0.0
Motherwell 1 St Mirren 2 -0.1
Celtic 3 Kilmarnock 1 +0.1
Week of 3/3100.0*Relegated100.0*Average seed
Motherwell 4 Ross County 1 -0.4
Week of 3/7100.0*Relegated100.0*Average seed
St Mirren 1 Hearts 0 -0.6
Ross County 0 Rangers 1 -0.2
Celtic 5 St Mirren 0 +0.2
Points
Chance Will Win Championship