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*Average seed
St Johnstone 1 Livingston 1 -0.1
Motherwell 1 St Mirren 1 +0.0
Week of 5/11None
Week of 5/18None
Points
Chance Will Win Championship