How are these numbers calculated?

Big Games

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

Week of 2/8100.0*Chance in playoffs100.0*Average seed
Northampton 3 SouthernLehigh 1 -2.8
Week of 2/19100.0*Chance in playoffs100.0*Average seed
Emmaus 1 Parkland 8 +21.6
+0.6
Easton 0 Parkland 11 In
+0.1
Emmaus 1 SouthernLehigh 11 -1.9
Points
Chance Will Make Playoffs