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
Hampton Bays 77 Westhampton 71 +6.4
+0.3
Southold 76 Port Jefferson 55 +3.1
+0.1
Center Moriches 98 BBP 55 -2.4
-0.1
Mattituck 95 Shelter Island 49 -1.8
-0.1
Center Moriches 81 Pierson 50 -1.8
-0.1
Riverhead 58 Southampton 62 -1.8
-0.1
Mattituck 87 Greenport 45 -1.7
-0.1
Longwood 54 Southampton 66 -1.5

What If

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

100100100100100100100100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213141516171819202122232425262728Count
135-0In97317,139
124-1In7921086,121
113-2100.0%375670172,936
102-396.09493940172,941
91-456.5075040486,277
80-513.2013582917,300
Total:89.2%30372391552,714
Games Above .500
Chance Will Make Playoffs