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
Clementi 0 T. Pagar 4 -0.2
Sengkang 1 Geylang 2 +0.1
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 +0.2
Clementi 1 Geylang 1 +0.2
Points
Chance Will Win Championship