How are these numbers calculated?

Big Games

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

Week of 3/14100.0*Average seed
Spartans 5 Cobras 3 +0.2
Saints 6 Thunder 9 +0.2
Week of 3/21100.0*Average seed
Spartans 7 Saints 6 (ot)+0.5
Week of 3/29None
Points
Chance Will Make Playoffs