How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Chance wins title100.0*Average seed
Celtic 2 Aberdeen 0 +22.4
+0.2
Rangers 2 Hearts 1 -19.3
-0.2
Week of 5/14100.0*Chance wins title100.0*Average seed
Hearts 1 Celtic 2 +30.2
+0.3
Rangers 4 Motherwell 1 -24.2
-0.2
Week of 5/21100.0*Chance wins title100.0*Average seed
Hibernian 0 Rangers 1 -39.5
-0.4
Motherwell 2 Celtic 1 -13.8
-0.1
Points
Chance Will Win Championship