How are these numbers calculated?

Big Games

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

Week of 5/17100.0*Average seed
Aberdeen 2 Rangers 0 +1.4
Kilmarnock 2 Falkirk 1 +1.3
Hibernian 0 Motherwell 2 -0.3
Dundee Utd 0 Celtic 1 -0.1
Caley Thistle 0 St. Mirren 0 +0.1
Rangers 1 Motherwell 1 -0.1
St. Mirren 0 Rangers 3 +0.0
Points
Chance Will Win Championship