How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Friday100.0*Chance in playoffs100.0*Average seed
El Paso 3 Grand Prairie 17 +3.6
+0.4
Laredo 3 Amarillo 6 -0.5
Gary 20 Newark 11 -0.1
If winner is:HomeAway
Saturday100.0*Chance in playoffs100.0*Average seed
El Paso vs Grand Prairie-3.8+3.7
-0.3+0.3
Laredo vs Amarillo+0.7-0.7
Gary vs Newark-0.1+0.1

What If

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

100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213Count
69-91In100502*
6857-23In991137
6756-24In982362
6655-25In9910848
6554-26In98201,794
6453-27In964003,612
6352-28In937006,828
6251-29In88110112,341
6150-30In81171120,601
6049-31100.0%712522033,361
5948-3299.9583444050,827
5847-3399.84242870073,764
5746-3499.427471411100102,465
5645-3597.814442416200133,838
5544-3693.353433206100168,026
5443-3783.01214021143000200,219
5342-3865.40939162310200224,993
5241-3943.90332824228100243,064
5140-4025.712321529228100249,745
5039-4113.7013051931237100243,477
4938-426.406017233322710225,732
4837-432.5030018253421610198,696
4736-440.810021129351940168,042
4635-450.20003143334142134,353
4534-460.0000052039297101,912
4433-470.0001931421774,170
4332-48Out00319463151,430
4231-49Out019414833,083
4130-50Out004326420,783
4029-51Out02237612,298
3928-52Out114856,879
3827-53Out08923,652
3726-54Out6941,848
3625-55Out298868
3524-56Out298390
3423-57Out199158
3322-58Out29854
11-32Out100420*
Total:40.4%7111767888876532,805,572

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs