How are these numbers calculated?

Big Games

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

Week of 4/19100.0*Promoted100.0*Relegated100.0*Average seed
Dumbarton 0 Queen of the South 3 No
Hamilton 2 Alloa Athletic 1 No
+0.2
-0.1
Cowdenbeath 4 Livingston 0 +0.8
Falkirk 2 Raith Rovers 1 +0.1
Week of 4/26100.0*Promoted100.0*Relegated100.0*Average seed
Raith Rovers 1 Cowdenbeath 2 +2.9
Alloa Athletic 0 Dundee 3 +0.8
-0.1
Queen of the South 2 Livingston 0 +0.0
Week of 5/3100.0*Promoted100.0*Relegated100.0*Average seed
Cowdenbeath 1 Queen of the South 1 -2.5
+0.1
Falkirk 3 Alloa Athletic 1 +1.6
-0.2
Livingston 2 Raith Rovers 0 +0.1
Points
Chance Will Win Championship