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
Kettle Run/Liberty 2 Loudoun Valley/Woodgrove 3 +0.1
Loudoun County/John Champe 6 Flint Hill 13 -0.0
Madison 2 Independence/Rock Ridge 5 -0.0
Week of 2/7100.0*Average seed
Dominion/Potomac Falls 9 Independence/Rock Ridge 5 +0.2
Flint Hill 8 Kettle Run/Liberty 9 -0.1
Chantilly 6 Freedom 3 +0.1
If winner is:HomeTieAway
Week of 2/14100.0*Average seed
Oakton vs Riverside+0.9-0.1-0.1

What If

Chances based on how well the Oakton finish out the regular season.   Explain

100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs12345678910111213141516171819202122Count
81-0-0Out10075,637,660
70-0-1Out10030,416,539
60-1-0Out1000502,352,561
Total:Out12880608,406,760
Games Above .500
Chance Will Make Playoffs