Pittsburgh Steelers Playoff Chances 2015-1 50/50

Beat Cleveland 3-1, average seed up 2 to 2
11-5-0   .688

How are these numbers calculated?

Big Games

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

Week of 12/20100.0*Chance in playoffs100.0*Average seed
Arizona 12 Pittsburgh 20 In
+0.5
Miami 12 San Francisco 20 +0.0
Week of 1/3100.0*Chance in playoffs100.0*Average seed
Cleveland 1 Pittsburgh 3 +1.5
Denver 1 San Diego 50 +0.3
Buffalo 1 NY Jets 3 -0.3

What If

Chances based on how well Pittsburgh finishes out the regular season.   Explain

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs12345678910111213141516Count
110-0-0In1003,849,136
Total:In1003,849,136
Games Above .500
Chance Will Make Playoffs