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*Average seed
Motherwell 1 St Mirren 2 -0.2
Aberdeen 1 Ross County 2 +0.2
Hamilton Accies 0 Motherwell 0 -0.1
Week of 3/3100.0*Average seed
Motherwell 4 Ross County 1 +0.2
Kilmarnock 2 Aberdeen 2 +0.1
Week of 3/7100.0*Average seed
Aberdeen 3 Hibernian 1 -0.1
Hearts 1 Motherwell 1 +0.1
Points
Chance Will Win Championship