How are these numbers calculated?

Big Games

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

Week of 4/14100.0*Chance wins title100.0*Promoted100.0*Average seed
St Mirren 0 Livingston 0 No
-0.0
+0.0
Brechin 0 Dundee Utd 5 -0.0
Week of 4/21100.0*Chance wins title100.0*Promoted100.0*Average seed
Queen of the South 3 Dundee Utd 0 +0.1
Livingston 3 Brechin 0 +0.1
Week of 4/28None
Points
Chance Will Win Championship