How are these numbers calculated?

Big Games

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

Week of 10/11100.0*Chance wins title100.0*Average seed
Home 1 Geylang 1 +0.8
Sengkang 0 SAFFC 2 +0.8
+0.1
Week of 10/18100.0*Chance wins title100.0*Average seed
Home 1 SAFFC 2 +6.3
+0.3
Balestier 0 Geylang 1 -4.3
-0.1
Week of 10/25100.0*Chance wins title100.0*Average seed
Gombak 1 Home 0 +9.2
+0.6
Geylang 3 Jurong 0 No
-0.1
SAFFC 5 Woodlands 0 +2.7
+0.2
Points
Chance Will Win Championship