How are these numbers calculated?

Big Games

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

Week of 4/20100.0*Promoted *100.0*Average seed
London Wasps 24 Exeter 37 -14.4
+0.0
Bath 27 Leicester 26 +8.5
+0.4
Gloucester 28 Saracens 23 -0.7
Week of 5/4100.0*Promoted *100.0*Average seed
Exeter 40 Gloucester 39 No
-0.0
Saracens 23 Bath 14 No
-0.0
Games Above .500
Chance Will Make Playoffs