How are these numbers calculated?

Big Games

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

Week of 1/29100.0*Chance in playoffs100.0*Average seed
Perth 3 Central Coast 1 +9.4
+0.5
Brisbane 1 Sydney 0 -3.1
Wellington 1 Adelaide 0 -1.3
-0.2
North Queenslan 2 Newcastle 1 +0.1
+0.2
Week of 2/5100.0*Chance in playoffs100.0*Average seed
Adelaide 2 Brisbane 0 In
Sydney 3 Perth 2 -0.4
Central Coast 3 Newcastle 0 +0.3
Gold Coast 0 Wellington 1 -0.3
Week of 2/12100.0*Chance in playoffs100.0*Average seed
Wellington 3 Central Coast 0 -0.3
Newcastle 1 Adelaide 2 +0.1
Points
Chance Will Make Playoffs