How are these numbers calculated?

Big Games

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

Week of 4/1100.0*Chance in playoffs100.0*Average seed
Franklin 5 Jaun 4 -0.3
-0.1
Hamilton 2 Zasowski 8 -0.0
Howard 9 Zwiefel 13 +0.7
Points
Chance Will Make Playoffs