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
Oxford Utd 2 Hartlepool 0 +14.3
+0.4
Plymouth 2 Dag & Red 3 +10.7
+0.3
Bristol Rovers 3 Exeter 1 -5.6
-0.1
Accrington 3 York 0 -4.5
-0.1
Wimbledon 0 Portsmouth 1 -0.3
Portsmouth 2 Wycombe 1 -0.1
Week of 4/30100.0*League One100.0*Average seed
Carlisle 0 Oxford Utd 2 +22.6
+0.6
York 1 Bristol Rovers 4 -12.8
-0.2
Wycombe 0 Accrington 1 -7.0
-0.3
Cambridge 2 Plymouth 2 +1.1
+0.0
Hartlepool 0 Portsmouth 2 -0.4
Week of 5/7100.0*League One100.0*Average seed
Oxford Utd 3 Wycombe 0 Yes
+0.4
Bristol Rovers 2 Dag & Red 1 -13.1
-0.1
Accrington 0 Stevenage 0 -2.4
+0.3
Points
Chance Will Win Championship