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*Average seed
Airdrieonians 2 Albion Rovers 0 +0.2
East Fife 0 Arbroath 5 +0.1
Forfar Athletic 0 Alloa Athletic 1 +0.1
Week of 4/22None
Week of 4/28100.0*Average seed
Airdrieonians 1 Forfar Athletic 2 -0.4
East Fife 2 Stranraer 3 +0.3
Points
Chance Will Win Championship