How are these numbers calculated?

Big Games

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

Week of 9/25100.0*Chance in playoffs100.0*Average seed
Regina 8 Calgary 72 -4.2
-0.1
UBC 29 Saskatchewan 45 -1.9
-0.1
Alberta 32 Manitoba 42 -0.9
If winner is:HomeAway
Week of 10/2100.0*Chance in playoffs100.0*Average seed
Manitoba vs Regina-1.8+5.6
-0.1+0.2
Calgary vs Saskatchewan+0.2-0.6
Alberta vs UBC-0.2+0.2

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456Count
84-093.0%017472970628,027
63-131.892340288,041,263
42-2Out89237,065,690
0-2Out100113,748,448*
Total:2.0%0011494159,483,428

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs