How are these numbers calculated?

Big Games

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

Week of 2/29100.0*Chance wins title100.0*Promoted100.0*Average seed
Stenhousemuir 0 Cove Rangers 3 +2.6
+2.0
+0.0
Cowdenbeath 1 Edinburgh City 1 +1.7
+1.3
Week of 3/7None
Points
Chance Will Win Championship