How are these numbers calculated?

Big Games

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

Week of 5/1100.0*Chance wins title100.0*Average seed
Mallorca 1 Real Madrid 4 -14.4
-0.1
Villarreal 1 Barcelona 4 +11.0
+0.1
Barcelona 4 Tenerife 1 +7.6
+0.1
Real Madrid 3 Osasuna 2 -5.4
-0.1
Week of 5/8100.0*Chance wins title100.0*Average seed
Sevilla 2 Barcelona 3 +19.2
+0.2
Real Madrid 5 Athletic Bilbao 1 -11.3
-0.1
Week of 5/16100.0*Chance wins title100.0*Average seed
Barcelona 4 Valladolid 0 Yes
+0.2
Málaga 1 Real Madrid 1 +15.7
+0.2
Points
Chance Will Win Championship