How are these numbers calculated?

Big Games

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

Week of 11/27100.0*Chance in playoffs100.0*Average seed
Matt P 149.1 Jerry 166.7 +7.8
+0.3
Shane 159.55 Chris 142.45 +1.6
-0.1
Eric 139 Frank 161.3 +1.0
Doug 236.7 Buzz 113.93 +1.0
Paul 185.2 Andrew 159.45 +0.1
Week of 12/4100.0*Chance in playoffs100.0*Average seed
Chris 89.5 Jerry 134.2 +0.4
If winner is:HomeAway
Week of 12/11100.0*Chance in playoffs100.0*Average seed
Matt P vs Shane+0.3-0.3
Jerry vs Doug+0.2-0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
81-0In752556,562,155
70-1In257556,560,565
Total:In5050113,122,720
Games Above .500
Chance Will Make Playoffs