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 +0.4
+0.1
ESM 47 Smithtown East 57 -0.3
-0.1
Centereach 56 PatchMed 62 -0.3
Smithtown East 72 Floyd 44 -0.2
-0.1
Sachem North 53 BBP 62 +0.2
Comsewogue 64 Lindenhurst 65 +0.2
+0.1
Northport 75 HHH West 69 -0.1
Riverhead 58 Southampton 62 +0.1

What If

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

100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213141516171819202122232425262728Count
115-0In22432771017,269
104-1In0519312713410086,525
93-2In0028212924123100172,922
82-3100.0%00151527281761000171,861
71-491.8001616262616620086,622
60-59.600271928261331017,515
Total:95.8%124679109899644432110000552,714
Games Above .500
Chance Will Make Playoffs