How are these numbers calculated?

Big Games

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

Week of 12/27100.0*Chance in playoffs100.0*Average seed
Mt. Sinai 68 Sachem East 58 -0.1
-0.1
Center Moriches 98 BBP 55 +0.1
Sachem North 53 BBP 62 -0.1
ESM 47 Smithtown East 57 +0.1
Hampton Bays 77 Westhampton 71 +0.1
Harborfields 59 Connetquot 54 -0.1
Sayville 52 Hauppauge 59 -0.1

What If

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

100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213141516171819202122232425262728Count
97-084.2%0417333013204,273
86-112.20021026332171030,189
75-20.00031531321530090,785
64-3Out001622372771151,142
53-4Out006294421151,400
42-5Out02257290,481
31-6Out049630,173
20-7Out1004,271
Total:1.3%0000122467912161824552,714
Games Above .500
Chance Will Make Playoffs