How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Chance in playoffs100.0*Average seed
Joe & Alice 133.26 Jenn & Shara 112.2 +21.4
+0.9
Avi & Natalie 79.72 Kevin & Caitlin 74.56 +3.3
+0.1
Justin & Laurel 122.2 Shawn & Erica 108.12 -0.5
Eric & Melissa 114.18 Rob & Craig 122.34 -0.1
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Joe & Alice 126.6 Avi & Natalie 114.84 +20.3
+0.9
Rob & Craig 134.34 Shawn & Erica 96.7 -4.6
Eric & Melissa 93.26 Justin & Laurel 80.96 -3.1
Kevin & Caitlin 69.72 Jenn & Shara 125.08 -0.9
-0.1
If winner is:HomeAway
Week of 12/8100.0*Chance in playoffs100.0*Average seed
Avi & Natalie vs Rob & CraigIn-7.8
+0.2-0.2
Shawn & Erica vs Kevin & Caitlin-7.8In
-0.2+0.2
Joe & Alice vs Eric & MelissaIn-7.8
+1.0-1.0
Justin & Laurel vs Jenn & Shara-0.7+0.7

What If

Chances based on how well the Joe & Alice finish out the regular season.   Explain

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
91-0In356519,287,284
80-184.3%1134391619,294,652
Total:92.2%17381720838,581,936
Games Above .500
Chance Will Make Playoffs