How are these numbers calculated?

Big Games

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

Week of 10/3100.0*Chance in playoffs100.0*Average seed
Spruce Grove 52 Jasper Place 27 +10.7
+0.9
Salisbury 10 Bev Facey 8 -0.2
+0.0
Week of 10/10100.0*Chance in playoffs100.0*Average seed
Bellerose 14 Spruce Grove 31 In
+0.9
Salisbury 21 AOB 14 -0.2
+0.0
Bev Facey 31 Harry Ainlay 28 -0.1
Week of 10/17100.0*Chance in playoffs100.0*Average seed
Spruce Grove 49 Bev Facey 6 +0.3
Salisbury 20 Harry Ainlay 29 -0.1
Bellerose 7 Jasper Place 30 +0.0
Games Above .500
Chance Will Make Playoffs