How are these numbers calculated?

Big Games

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

Week of 5/5100.0*Average seed
Hearts 1 Aberdeen 1 +0.2
Week of 5/12100.0*Average seed
Hearts 2 Hibernian 0 -0.1
Celtic 2 Aberdeen 1 -0.0
Week of 5/19100.0*Average seed
Aberdeen 2 Rangers 0 +0.3
Kilmarnock 1 Hearts 0 +0.3
Points
Chance Will Win Championship