How are these numbers calculated?

Big Games

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

Week of 4/23100.0*League One100.0*Average seed
Accrington 3 York 0 +14.7
+0.4
Plymouth 2 Dag & Red 3 +10.2
+0.3
Bristol Rovers 3 Exeter 1 -5.4
-0.1
Oxford Utd 2 Hartlepool 0 -4.3
-0.1
Wimbledon 0 Portsmouth 1 -0.1
Portsmouth 2 Wycombe 1 -0.1
Week of 4/30100.0*League One100.0*Average seed
Wycombe 0 Accrington 1 +20.8
+0.6
York 1 Bristol Rovers 4 -9.6
-0.2
Carlisle 0 Oxford Utd 2 -8.3
-0.2
Cambridge 2 Plymouth 2 +1.1
+0.0
Hartlepool 0 Portsmouth 2 -0.2
Week of 5/7100.0*League One100.0*Average seed
Accrington 0 Stevenage 0 -20.2
-0.7
Bristol Rovers 2 Dag & Red 1 -9.6
-0.1
Oxford Utd 3 Wycombe 0 -8.4
-0.1
Points
Chance Will Win Championship