How are these numbers calculated?

Big Games

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

Week of 1/31100.0*Average seed
Madison 2 Independence/Rock Ridge 5 +0.7
Kettle Run/Liberty 2 Loudoun Valley/Woodgrove 3 -0.4
Loudoun County/John Champe 6 Flint Hill 13 +0.1
Week of 2/7100.0*Average seed
Dominion/Potomac Falls 9 Independence/Rock Ridge 5 -0.5
Tuscarora/Westfield 12 Loudoun Valley/Woodgrove 2 +0.2
Chantilly 6 Freedom 3 +0.0
Week of 2/14None

What If

Chances based on how well the Independence/Rock Ridge finish out the regular season.   Explain

If finish:Chance inChance will finish regular season at seed
Games Above .500
Chance Will Make Playoffs