How are these numbers calculated?

Big Games

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

Week of 9/19100.0*Average seed
Clementi 3 Sengkang 1 +0.2
T. Pagar 1 Jurong 0 +0.1
Week of 9/26100.0*Average seed
T. Pagar 0 Sengkang 3 -0.4
Week of 10/3None
Chance Will Win Championship