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*Chance in playoffs100.0*Average seed
Stone Bridge 4 Langley 2 In
+1.3
Patriot 10 Battlefield 7 -7.9
-0.3
Kettle Run/Liberty 2 Loudoun Valley/Woodgrove 3 +4.5
+0.3
McLean 5 Briar Woods 8 +2.6
-0.0
Loudoun County/John Champe 6 Flint Hill 13 -1.5
-0.0
Broad Run 5 Dominion/Potomac Falls 4 +0.1
Week of 2/7100.0*Chance in playoffs100.0*Average seed
Briar Woods 5 Stone Bridge 6 +1.2
Patriot 5 Yorktown 1 -0.4
Dominion/Potomac Falls 9 Independence/Rock Ridge 5 -0.1
Week of 2/14None

What If

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

100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs12345678910111213141516171819202122Count
130-0-0In100608,406,760
Total:In100608,406,760
Games Above .500
Chance Will Make Playoffs