How are these numbers calculated?

Big Games

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

Week of 4/14100.0*Average seed
Morton 0 Queen of the South 1 +0.3
Dundee Utd 1 Falkirk 0 +0.0
Inverness CT 5 Dumbarton 1 -0.1
Dumbarton 0 Inverness CT 1 -0.1
Week of 4/21100.0*Average seed
Queen of the South 3 Dundee Utd 0 +0.3
Livingston 0 Inverness CT 1 -0.1
St Mirren 2 Morton 1 +0.1
Inverness CT 2 Dunfermline 2 -0.0
Week of 4/28100.0*Average seed
Morton 0 Inverness CT 3 +0.3
Brechin 1 Queen of the South 5 +0.2
Points
Chance Will Win Championship