How are these numbers calculated?

Big Games

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

Week of 2/21100.0*Average seed
Central Oklahoma 4 Oklahoma 2 -0.2
Oklahoma 2 Central Oklahoma 3 +0.0
Week of 2/28100.0*Average seed
Arizona 3 Arizona State 1 -0.4
Arizona 3 Arizona State 2 -0.2
Points
Chance Will Win Championship