How are these numbers calculated?

Big Games

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

Week of 10/17100.0*Average seed
Woodlands 1 Y. Lions 2 -0.5
Y. Lions 2 Hougang 0 -0.2
Harimau Muda 0 T. Pagar 5 +0.2
Week of 10/24100.0*Average seed
Woodlands 3 Harimau Muda 2 +0.4
Week of 10/31None
Chance Will Make Playoffs