How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
mcn 118 war 81 +17.2
+0.8
wel 61 she 80.5 +5.1
+0.1
pin 126.5 tot 101 -2.4
-0.1
arn 58 thi 86.5 +1.8
+0.1
dav 105 tai 67.5 +0.5
sco 129.5 con 127.5 -0.4
If winner is:HomeAway
Week of 11/24100.0*Chance in playoffs100.0*Average seed
mcn vs she+14.0-17.1
+0.7-0.8
dav vs thi-4.4+4.0
-0.1+0.1
wel vs tot-3.4+3.9
-0.1+0.1
pin vs tai+2.2-2.4
sco vs war-1.5+1.4
arn vs con-0.2+0.2
+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456789101112Count
02-198.7%053047161018,156,629
1-254.01144033121015,824,029
3-0In115393876,939,727
0-33.84183633904,606,079
Total:73.8%02818252114841045,526,464
Points
Chance Will Make Playoffs