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*Promoted100.0*Average seed
Ayr Utd 1 Stranraer 2 +1.0
+0.2
Forfar Athletic 0 Alloa Athletic 1 -0.2
East Fife 0 Arbroath 5 -0.1
+0.1
Week of 4/22None
Week of 4/28None
Points
Chance Will Win Championship