How are these numbers calculated?

Big Games

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

Week of 9/29100.0*Average seed
Sengkang 1 Geylang 2 -0.3
Clementi 0 T. Pagar 4 +0.2
Woodlands 1 Balestier 0 -0.1
Week of 10/6100.0*Average seed
Sengkang 1 Sembawang 3 -0.2
Tampines 1 Clementi 1 +0.1
Week of 10/16100.0*Average seed
Woodlands 3 Sengkang 0 -0.1
Clementi 1 Geylang 1 -0.1
Points
Chance Will Win Championship