How are these numbers calculated?

Big Games

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

Week of 4/13100.0*League One100.0*Average seed
AFC Wimbledon 2 Exeter City 2 -1.6
-0.2
Cheltenham Town 1 Gillingham 0 -0.9
-0.1
Chesterfield 2 Bradford City 2 +0.8
+0.1
Rotherham 2 Fleetwood Town 1 -0.3
+0.1
Northampton 0 York 2 +0.3
Burton Albion 1 Plymouth Argyle 0 -0.1
Rochdale 2 Port Vale 2 +0.0
Week of 4/20100.0*League One100.0*Average seed
Exeter City 0 Cheltenham Town 1 -5.0
-0.8
Bradford City 1 Burton Albion 0 -4.2
-0.2
Fleetwood Town 1 Chesterfield 3 -0.7
-0.1
York 2 Southend 1 +0.4
+0.1
Oxford United 3 Rochdale 0 -0.0
Bristol Rovers 0 Accrington 1 +0.0
Barnet 1 Wycombe 0 +0.0
Week of 4/27100.0*League One100.0*Average seed
Chesterfield 4 Exeter City 0 -0.8
Accrington 0 Oxford United 3 -0.3
Southend 0 Morecambe 1 +0.1
Points
Chance Will Win Championship