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
Bristol Rovers 3 Exeter 1 +16.7
+0.5
Plymouth 2 Dag & Red 3 +9.9
+0.3
Accrington 3 York 0 -5.0
-0.1
Oxford Utd 2 Hartlepool 0 -4.8
-0.1
Wimbledon 0 Portsmouth 1 -0.1
Portsmouth 2 Wycombe 1 -0.1
Week of 4/30100.0*League One100.0*Average seed
York 1 Bristol Rovers 4 +25.5
+0.6
Carlisle 0 Oxford Utd 2 -11.1
-0.2
Wycombe 0 Accrington 1 -11.1
-0.2
Cambridge 2 Plymouth 2 +2.0
+0.1
Hartlepool 0 Portsmouth 2 -0.2
Week of 5/7100.0*League One100.0*Average seed
Bristol Rovers 2 Dag & Red 1 +22.7
+0.3
Accrington 0 Stevenage 0 +22.6
+0.4
Oxford Utd 3 Wycombe 0 -16.6
-0.3
Points
Chance Will Win Championship