How are these numbers calculated?

Big Games

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

Week of 8/12100.0*Wooden Spoon100.0*Average seed
Essendon 75 Gold Coast 69 +0.2
Brisbane 99 Carlton 95 +0.1
-0.1
Fremantle 70 Adelaide 142 -0.0
Week of 8/20100.0*Wooden Spoon100.0*Average seed
Essendon 53 Bulldogs 93 -0.2
Week of 8/26100.0*Wooden Spoon100.0*Average seed
Essendon 103 Carlton 79 +0.1
St Kilda 161 Brisbane 103 -0.1
+0.4
Fremantle 69 Bulldogs 49 No
Games Above .500
Chance Will Make Playoffs