How are these numbers calculated?

Big Games

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

Week of 5/4100.0*Relegated100.0*Average seed
Dundee 0 Hamilton Accies 1 +2.9
-0.1
Motherwell 1 St Mirren 1 +0.4
-0.0
Week of 5/11100.0*Relegated100.0*Average seed
Livingston 0 Dundee 1 -12.0
+0.2
Week of 5/18None
Points
Chance Will Win Championship