How are these numbers calculated?

Big Games

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

Week of 11/10100.0*Chance in playoffs100.0*Average seed
tai 92 arn 71 -13.2
-0.8
war 93.5 wel 84.5 +1.8
+0.1
she 90.5 pin 83.5 +1.4
con 109 mcn 62 +1.2
tot 99 dav 116 -0.5
thi 115 sco 92.5 +0.4
+0.1
If winner is:HomeAway
Week of 11/17100.0*Chance in playoffs100.0*Average seed
arn vs thi+9.6-7.7
+0.8-0.6
wel vs she-1.8+2.3
mcn vs war-2.0+1.9
-0.1+0.1
pin vs tot-1.3+1.4
dav vs tai+0.4-0.4
-0.1+0.1
sco vs con-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456789101112Count
02-21.4%0111363912011,558,268
1-30.000526481928,840,872
3-131.5007253825506,679,775
0-4Out011647362,528,610
4-090.30052137289101,446,915
Total:11.5%000137132023199331,054,440
Points
Chance Will Make Playoffs