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
+0.9
wel 61 she 80.5 +4.0
+0.1
pin 126.5 tot 101 -2.5
-0.1
arn 58 thi 86.5 +2.3
+0.1
sco 129.5 con 127.5 -0.3
If winner is:HomeAway
Week of 11/24100.0*Chance in playoffs100.0*Average seed
mcn vs she+17.1-17.1
+0.9-0.9
dav vs thi-4.5+4.5
-0.1+0.1
wel vs tot-3.9+3.9
-0.1+0.1
pin vs tai+2.1-2.1
sco vs war-1.6+1.6
arn vs con-0.4+0.4

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
02-198.8%07344414105,390,628
1-247.9111363515205,384,878
3-0In222432941,798,794
0-31.721130411611,797,196
Total:67.7%03816211915962014,371,496
Points
Chance Will Make Playoffs